25% of their daughters are expected to have normal color vision, while the other 75% are expected to be carriers of the color blindness gene.
Red-green color blindness is a genetic condition caused by a mutation in a gene located on the X chromosome. The gene responsible for normal color vision is dominant, while the gene responsible for color blindness is recessive.
If two people with normal color vision have two sons, one color-blind and one with normal color vision, it is likely that the parents are carriers of the color blindness gene. This means that they each have one normal X chromosome and one X chromosome carrying the color blindness gene.
When the parents have children, they each pass on one X chromosome to their offspring. The probability of passing on the normal X chromosome is 50%, while the probability of passing on the X chromosome carrying the color blindness gene is also 50%.
For their daughters, the probability of having normal color vision is:
(normal X from mother) * (normal X from father) = 0.5 * 0.5 = 0.25.
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which kind of sterilization procedure takes advantage of the size of microorganisms? multiple choice autoclaving filtration use of chemicals open flame
Filtration kind of sterilization procedure takes advantage of the size of microorganisms
The kind of sterilization procedure that takes advantage of the size of microorganisms is filtration.
Filtration is a method of sterilization that involves the removal of microorganisms from a solution or mixture by passing it through a filter that is small enough to retain the microorganisms but allows the liquid to pass through. The size of the pores in the filter is critical in this process, as it determines the size of the microorganisms that can be removed. Typically, filters with smaller pore sizes are used to remove smaller microorganisms, such as bacteria, while larger pore sizes are used to remove larger microorganisms, such as fungi and protozoa.
Autoclaving, the use of chemicals, and open flame are all sterilization methods that use different mechanisms to kill microorganisms, but do not take advantage of the size of microorganisms in the same way as filtration.
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What or sensory neurons are those that convey information from receptors in the periphery of the body to the brain and spinal cord?
The spinal cord is where information processing starts after afferent neurons in the dorsal roots convey impulses from the body's sense receptors.
The nerve fibers that transmit sensory data from the outside environment to the brain are known as afferent neurons, or sensory neurons. The sensation of touch, pain, and temperature are all examples of sensory information, along with other unique senses like vision, hearing, smell, or taste. Afferent neurons are frequently connected to specific sensory receptors that are divided into groups based on the stimuli to which they respond. Afferent neurons send information to the central nervous system from sensory receptors located all throughout the body.
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scientists compared fossil remains of a species that lived 5,000 years ago with members of the same species living today. scientists concluded that this species had changed very little over the entire time period. which statement best accounts for this lack of change? *
The most likely explanation for a lack of change in a species over a 5,000-year time period is that the species is well-adapted to its environment and experiences little pressure to evolve.
Evolution by natural selection occurs when certain traits that are advantageous in a particular environment become more common in a population over time. If a species is well-adapted to its environment, it may not experience much pressure to evolve, as the traits that are advantageous in its environment are already common in the population.
In this case, the species in question has likely been able to survive and reproduce effectively for thousands of years without undergoing significant changes, as it is well-adapted to its environment.
If a species experiences no significant environmental changes over a long period of time, it may not experience pressure to evolve and may remain relatively unchanged.
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what are some similarities and differences between early development in plants versus animals?
During early development, the development in plants in rapid but it is much slower in the case of animals but since they are both eukaryotic, they show similarities during embryogenesis.
During the early developmental stages, plants exhibit immediate growth whereas animals do not show rapid growth when compared to plants. The cells present in plants differ immediately, whereas this is does not happen in animals. Plants are solid during early stages of development but the animals have two body cavities. Plants exhibit immediate growth, whereas animals exhibit growth later in their life.
Cell differentiation in plants as well as animals takes place differently. Growth in plants is majorly affected by light as well phytohormones, whereas the growth in animals is affected by nutrients. But plants and animals are quite similar to each other because of their eukaryotic cell ancestor. A lot of similarities can be found during the embryogenesis.
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many crustaceans (for example, lobsters, shrimp, and crayfish) use their tails to swim, but crabs have reduced tails that curl under their shells and are not used in swimming. this is an example of .
Crabs have decreased tails that coil beneath their shells and are not utilized for swimming, unlike many other crustaceans (such as lobsters, shrimp, and crayfish). A vestige trait would be something like this.
Crustaceans, which include crabs, lobsters, crayfish, shrimp, krill, barnacles, brine shrimp, copepods, ostracods, and mantis shrimp, are an extremely diverse group of arthropods. In contrast to other arthropods, crustaceans are often aquatic and have two pairs of appendages (antennules and antennae) in front of the mouth as well as paired appendages that serve as jaws close to the mouth.
The biological evolution via natural selection theory was put out by British biologist Charles Darwin. Darwin referred to the concept of species change as "descent with modification" in his definition of evolution.
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Answer the question.
(1) What arrangement is not seen in rod-shaped cells? Coccus shaped cells?
(2) What is the reasoning why acidic dyes stain only the background and not the cells?
Acidic dyes are negatively charged and are attracted to the positively charged background of a microscope slide. Cells, on the other hand, are neutral and therefore do not attract the acidic dye.
What is microscope slide?A microscope slide is a thin flat piece of glass, plastic, or resin that is used to hold samples for viewing under a microscope. The slide has a depression in the middle of one side, into which a sample is placed. The sample is then covered with a coverslip, which is a second thin piece of glass, plastic, or resin that is placed directly above the sample to protect it from damage. Microscope slides are commonly used in laboratories, classrooms, and medical settings to examine and analyze the structure and composition of cells, bacteria, and other microscopic organisms.
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gap genes ____, while segment polarity genes _____.
Gap genes are responsible for patterning the embryonic axis and defining the boundaries of each segment in fruit flies (Drosophila melanogaster), while segment polarity genes control the orientation of body structures within each segment.
What are gap and segment polarity genes?Segment polarity genes in Drosophila are needed for the proper formation of epidermal pattern within each of the segment. Certain segment polarity genes are critical for the determination of specific neuronal identities in the developing central nervous system (CNS) of Drosophila embryo.
Gap genes encode transcription factors of zinc-finger class. They are expressed in broad bands in the embryo, boundaries of which are sharpened by regulatory interactions among the gap genes and with the maternal effect genes.
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when performing abo typing by the gel method in microtubes, the cells appear pelleted at the bottom after centrifugation. what is the interpretation of this appearance?
The appearance of a visible pellet at the bottom of the microtube after centrifugation during ABO typing by the gel method indicates agglutination, which is an important factor in determining an individual's blood group. The interpretation of the appearance depends on the specific reagents used and the observed pattern of agglutination.
ABO typing is a laboratory test used to determine an individual's blood group based on the presence or absence of certain antigens on red blood cells. The gel method is one of the commonly used methods to perform ABO typing in microtubes. During the process, the cells are mixed with specific reagents and centrifuged.
If the cells appear pelleted at the bottom of the microtube after centrifugation, it means that there is agglutination, which occurs when antibodies present in the reagents cross-link the antigens on the surface of the red blood cells. Agglutination leads to the formation of clumps, which can be seen as a visible pellet at the bottom of the microtube.
The interpretation of this appearance depends on the type of reagents used and the observed pattern of agglutination. For example, if there is agglutination with both anti-A and anti-B reagents, it suggests that the blood group is AB. If there is no agglutination with either reagent, the blood group may be O. If there is agglutination with only one of the reagents, the blood group may be either A or B, depending on which reagent produced agglutination.
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tracking down unidentified human pathogens falls within which field of microbiology? (identify the best fit answer.)
One of the most significant subfields of the medical and biological sciences is immunology, which is the study of the immune system.
Additionally, it is now understood that immune responses contribute to the emergence of a wide range of common diseases, including metabolic, cardiovascular, and neurodegenerative conditions like Alzheimer's, which were not previously linked to the immune system.
With continuous research in immunotherapy, autoimmune illnesses, and vaccines for newly emerging viruses like Ebola, immunological research continues to broaden the limits of our understanding of how to address serious health conditions. It has been made possible to find new diagnoses and therapies for a variety of diseases by improving our understanding of basic immunology, which is crucial for clinical and commercial use. In addition to the aforementioned, immunological research has given rise to vitally significant research methods and instruments like flow cytometry and antibody technology, along with the advancement of technology.
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Why is mitochondrial DNA inherited only from mothers and not fathers?
Because sperm contains few mitochondria, which are degraded after fertilization, an individual's mitochondrial genome is entirely derived from the mother.
Mitochondrial DNA is unique in that it is inherited only from the mother. The nucleus contains the majority of our cells' DNA. This DNA was inherited in equal parts from both of our parents. However, there is some DNA floating around inside another cell organelle, the mitochondria. Mitochondria are found in eggs but not in the heads of sperm cells, so mtDNA is only inherited from mothers. mtDNA does not recombine during meiosis.
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What cycle is most directly affected by the combustion of fossil fuels?
Jim Blonde and the evil professor Malhomme are in a car chase. Blonde has a 24-km lead and travels km/h. Malhomme is going 156 km/h. Fill the table to determine when and where Malhomme will catch up to Blonde.
Blonde has a 24-km lead and travels km/h.
Malhomme is going 156 km/h.
Time To Blonde: 3hr
Distance to catch Blonde: 241miles
t(hrs) [tex]D_{Blonde}[/tex] [tex]D_{Malhomme }[/tex]
0 24 0
1 113 97
2 202 194
3 291 291
What does km/h mean?
A derived unit for both speed and velocity, kilometres per hour is a measurement that takes length in kilometres and time in hours. Although kph or kmph are also occasionally used, km/h is the correct abbreviation for this measure.
What is speed kilometer per hour?
A moving object moves a kilometre every hour if its speed is one kilometre per hour. 1 km/h is comparable to very sluggish walking. For automotive speeds, kilometres per hour is frequently utilised. At this pace, you can go 100 kilometres in one hour.
Hence above given is a correct answer.
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Prepare a list of important scientific and technological knowledge in Aquaculture Engineering. It is the research methodology course.
Here is a list of important significant and technological
knowledge in Aquaculture Engineering:
1. Biology of aquatic species: Understanding the existence cycle, development, propagation, and conduct of species utilized in hydroponics.
2.Water quality management: Information on water science, water trade rates, oxygenation, and filtration frameworks to keep up with ideal water conditions for hydroponics.
3.Feed formulation and nutrition: Grasping the dietary necessities of various species and the improvement of adjusted abstains from food for ideal development and wellbeing.
4.Recirculating aquaculture systems(RAS): Information on the plan, development, and activity of RAS, including water treatment, air circulation, and filtration frameworks.
5.Aquatic animal health management: Understanding the illnesses influencing oceanic species and the strategies for anticipation, analysis, and treatment.
6.Aquatic animal behavior and welfare: Understanding the way of behaving and government assistance of oceanic species in bondage and the variables that can affect their prosperity.
7.Aquatic plant cultivation: Information on the development, sustenance, and the executives of amphibian plants utilized in hydroponics frameworks.
8.Harvesting and post-harvest handling: Figuring out the strategies for gathering and taking care of oceanic species, including evaluating, pressing, and transportation.
9.Aquaculture systems design and construction: Information on the plan and development of hydroponics frameworks, including lakes, tanks, and RAS.
10.Environmental impact assessment: Understanding the possible natural effect of hydroponics tasks and the techniques for limiting and relieving these effects.
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which evolutionary force do you find most likely to lead to the loss of the cystic fibrosis gene in the population, genetic drift or natural selection against the cystic fibrosis allele? explain your answer.
The loss of the cystic fibrosis (CF) gene in a population is most likely to be caused by natural selection against the CF allele.
Cystic fibrosis is a genetic disease caused by a mutation in the CFTR gene. People with cystic fibrosis experience a range of symptoms, including respiratory problems and digestive issues, which can reduce their life expectancy.
The severity of the symptoms can vary, but on average, individuals with cystic fibrosis have reduced reproductive fitness compared to individuals without the disease.
In this scenario, natural selection against the CF allele is likely to occur because individuals with the CF allele are at a disadvantage in terms of reproductive fitness. Over time, the frequency of the CF allele in the population is likely to decrease as individuals with the CF allele are less likely to survive and reproduce compared to individuals without the disease.
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if you were to analyze the source of the genetic material in an angiosperm endosperm, what ratio of maternal to paternal material would you find? 3:2 1:1 1:2 2:1
if you were to analyze the source of the genetic material in an angiosperm endosperm, 2:1 is ratio of maternal to paternal material.
It is basically composed of haploid cells. The development of endosperm of angiosperms occurs, as a rule, only after triple fusion, i.e., the fusion of sperm with the polar nuclei of the central cell of an embryo sac, resulting in formation of the primary nucleus of the endosperm
The endosperm plays an important role in supporting embryonic growth by supplying nutrients, protecting embryo and controlling embryo growth by acting as a mechanical barrier during seed development and germination
The central cell of female gametophyte in these taxa contains only one haploid nucleus; thus endosperm is diploid and has ratio of one maternal to one paternal genome.
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dna probes can be used to detect whether or not a specific dna sequence exists in a dna sample. determine which probe can be used to detect each of the target dna sequences shown. one of the probes cannot be used to detect any of the target dna sequences.
First image is Correct. DNA probes are single-stranded DNA lengths that can be used to detect the presence of target sequences through hybridization.
In order to be detected, DNA probes are typically labeled, for instance with radioisotopes, epitopes, biotin, or fluorophores. A single-stranded DNA or RNA sequence used as a probe is one that is used to look for its corresponding sequence in a sample genome. In order for the probe sequence to hybridize with its complementary sequence, the sample and probe must be in touch.
A single-stranded DNA or RNA sequence known as a probe is used to identify particular DNA or RNA sequences. They are made to be complementary to the relevant region of the genome so that when the probe and the genome are combined, this will happen.
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Which of these is NOT found in the olfactory epithelium?a. olfactory sensory neuronsb. olfactory tractsc. supporting cellsd. olfactory stem cells
The correct answer is olfactory tractsc. It contains four major cell types, ciliated bipolar olfactory receptors, microvillar cells, sustentacular cells and rudimentary cells.
All except the rudimentary cells design for the face. In addition, occasional sinking cells and seditious cells, primarily lymphocytes, are seen( Meredith, 2001). The olfactory tractsc comprises three distinct cell types: rudimentary cells, olfactory sensory neurons, and sustentacular( or supporting) cells.
The olfactory sensory neurons are bipolar neurons seeing environmental chemicals. The olfactory epithelium( OE) has rudimentary cells that are stem cells able to regenerate different cell types that compose the OE when damaged.
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what issues may arise from crossover during meiosis?
Crossing over may result in some abnormal traits in offspring.
How might a cross-over impact an organism?
During prophase I of meiosis I, homologous chromosomes couple and exchange DNA (homologous recombination).
Chromosome crossover, which is just the transfer of genetic material between homologous chromosomes (occurs when similar regions on similar chromosomes split and then reattach to the other chromosome), is frequently the result of this.
It happens during a process called "synapsis," which takes place before the synaptonemal complex forms. Homologous chromosomes cross over during the pachytene stage. In this case, the exchange of chromosomal pieces results in a new combination of alleles, which gives rise to new characters that could be harmful to organisms.
So,.
Crossing over may result in some abnormal traits in offspring.
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what are the limitations of the body mass index as a measure of body size?
The limitations of the body mass index as a measure of body size is it cannot measure lean body mass.
BMI or body mass index is a calculation obtained by dividing body weight by height. This measurement serves to determine a person's ideal body weight and nutritional status. After doing BMI, we can find out whether we are overweight, normal, or underweight.
To calculate body mass index, you can use the formula: Body mass index (BMI) = body weight (kg) : height (m). Everyone's BMI results can be different depending on age, gender, ethnicity and others. Although it can determine a person's weight and nutritional status, BMI has limitations, namely it cannot measure lean body mass or how much fat is in the body.
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if the diet is lacking an essential amino acid, what will be the course of action? a. body cells will synthesize it b. protein synthesis will be limited c. health will not be affected as long as other nutrients are adequate d. proteins will be made but they will lack that particular amino acid
If the diet is lacking an essential amino acid, protein synthesis will be limited. The correct answer is B.
Essential amino acids are those that the body cannot synthesize on its own and must be obtained from dietary sources.
If a person's diet lacks one of these essential amino acids, their body will not have the necessary building blocks to make complete proteins. This will limit the body's ability to synthesize new proteins, which are necessary for growth, repair, and many other functions.
As a result, the person's health may be affected, especially if the deficiency persists over an extended period of time. It is important to have a balanced and varied diet that provides all the essential amino acids to support optimal health.
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though science fiction hsa produced stories like the blob, we do not see many large, single celled organism. which is a reason for limitation to cell size
The rates of protein production, the folding speeds of its slowest proteins, and—for big cells—the rates of protein diffusion all serve as growth constraints on cells.
What are the constraints of cell size measurement?The surface-area-to-volume ratio of cells prevents cells from growing to an extent that their surface area is insufficient to absorb nutrients and expel waste.
Prokaryotic cells do not fit the criteria for the cell hypothesis since they lack a distinct nucleus. Every known living thing is made up of one or more cells. All living cells grow from pre-existing cells through division. The cell is the fundamental structural and functional unit in all living things.
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Balance the chemical equations
Answer:
1. [tex]2NaI + F_{2} = 2NaF + I_{2}[/tex]
2. [tex]3Ca + N_{2} = Ca_{3} N_{2}[/tex]
3. [tex]Pb(ClO_{2})_{4} + 2Zn(SO_{4} ) = Pb(SO_{4})_{2} + 2Zn(ClO_{2})_{2}[/tex]
4. [tex]2Li(OH) = Li_{2}O + H_{2}O[/tex]
5. [tex]4Cr + 3O_{2} = 2Cr_{2}O_{3}[/tex]
Explanation:
These are all done similarly so I will just work out problem 3 because it is the hardest.
Start with the first part
[tex]Pb(ClO_{2})_{4}[/tex]
We see that there is one Pb and looking at the other side of the equation there is also only one. Next, there are 4 Cl, and on the other side there are only two so to make it even, we multiply the last part by 2 so we will have:
[tex]2Zn(ClO_{2})_{2}[/tex]
Now looking back at the first part, have 8 O, and in the second part 4 O so we have 12 O on the left side of the equation. on the right there are 8 O and 8 O so that is 16 O. To make that even, multiply the second part by 2 to get 8 O. Now there will be 2 Zn on each side and 2 S.
So we get the equation:
[tex]Pb(ClO_{2})_{4} + 2Zn(SO_{4}) = Pb(SO_{4})_{2} + 2Zn(ClO_{2})_{2}[/tex]
What is the name of the point where helicase begins splitting the nitrogen bases?
This helicase is located on the X chromosome in pericentromeric heterochromatin and binds to heterochromatin protein 1.
During replication, these strands are separated. Each strand of the original DNA molecule then serves as template for production of its counterpart, process referred to as semiconservative replication.
Then, a protein known as helicase attaches to and breaks apart hydrogen bonds between bases on the DNA strands, thereby pulling apart two strands. As the helicase moves along DNA molecule, it continues breaking these hydrogen bonds and separating two polynucleotide chains
Answer and Explanation: Hydrogen bonds between the DNA strands are broken by enzyme helicase, which unwinds strands that terminate at ni replication fork. Hydrogen bonds are formed between the nitrogenous bases of DNA strands, which holds them and form double stranded DNA structure.
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John and Jane are both heterozygous and have brown eyes. Blue eye alleles are recessive and brown eye alleles are dominant. What is the probability their child will have blue eyes?
There is a 25% chance that John and Jane's child will have blue eyes and a 75% chance that their child will have brown eyes.
John and Jane each have a dominant brown eye allele and a recessive blue eye allele, represented as B and b, respectively. Heterozygous individuals, like John and Jane, have a combination of dominant and recessive alleles and express the dominant trait. Therefore, they both have brown eyes.
When they have a child, each parent will contribute one allele to the offspring, giving them a 50% chance of inheriting either B or b from each parent. The probability of their child having blue eyes is determined by the combination of alleles they inherit from their parents.
If their child inherits two blue-eye alleles (bb), they will have blue eyes. The probability of this happening is (1/2) x (1/2) = 1/4 or 25%. If their child inherits one blue eye allele and one brown eye allele (Bb), they will have brown eyes because brown is dominant. The probability of this happening is 2 x (1/2) x (1/2) = 1/2 or 50%.
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the axon of each motor neuron has numerous endings called
Each motor neuron's axon has a large number of axonal terminals. Synaptic cleft refers to the physical space that exists between an axonal terminal and a muscle cell.
What does a motor unit's axon do?Their axon processes, which resemble threads, travel through nerves and deliver electrical impulses (also known as nerve impulses) to target muscles. Upon entering the target muscle, a motor neuron's axon splits into numerous branches, and each branch travels to a distinct muscle fiber.
A motor nerve plate is what?Motor endplates (MEPs) represent significant anatomical and functional junctions between skeletal muscle fibers and motor neurons [1]. Motor neurons send electrical impulses to MEPs, which produce endplate potentials and subsequently cause muscle contractions.
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the majority of the peptides displayed by class i and class ii mhc molecules on cells are derived from self proteins. t or f?
The given statement, " The majority of the peptides displayed by class I and class II MHC molecules on cells are derived from self proteins," is true because this acts as an identification and prevents the immune system form attacking the self-cells.
MHC stands for Major Histocompatibility Complex. It is a set of genes that produced proteins that act as receptors and help in identification of self and foreign proteins. Thus, there main function is of antigen presentation.
Immune system is a complex of organs and cells involved in the protection of body from disease and infections caused by microorganisms. These microorganisms are referred as the foreign invaders or particularly antigens.
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Which description of proteins after translation is true?
Responses
They must go through the transcription process before they can be used.
They are immediately functional upon creation.
They are not completely finished and usable by the cell.
Most are malformed and discarded by the cell.
After translation, proteins are not immediately functional upon creation. They are not completely finished and usable by the cell, and must go through further modifications such as folding and processing before they can function properly. Therefore, the description "They are not completely finished and usable by the cell" is true.
The correct description of proteins after translation is that they are not completely finished and usable by the cell, which is the third option, as during the process of translation, they often require additional modifications.
What exactly is translation?During transcription, the DNA sequence of a gene is copied into an RNA molecule, which is then used as a template for translation, in the process of translation, the ribosome reads the RNA sequence and uses it to assemble a specific sequence of amino acids into a polypeptide chain, and the most important modification that proteins undergo after translation is folding, proteins must fold into specific three-dimensional shapes in order to function properly.
Hence, the correct description of proteins after translation is that they are not completely finished and usable by the cell, which is the third option.
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2. describe the features of cells suggesting that all living organisms are derived from a common ancestor.]
All living organisms share a number of features that suggest they are derived from a common ancestor.
What is organisms?Organisms are living things that are made up of cells and can reproduce. Organisms can be divided into two main categories: prokaryotic and eukaryotic. Prokaryotic organisms are single celled organisms, such as bacteria, that lack a nucleus. Eukaryotic organisms are made up of multiple cells and contain a nucleus. Examples of eukaryotic organisms include plants, animals, and fungi.
These features include the presence of a plasma membrane which separates the cell from its environment, the presence of DNA as the genetic material, and the presence of ribosomes for protein synthesis. In addition, all cells are able to use energy in the form of ATP and respire, and all cells contain enzymes.
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5. What must a species do to ensure its survival in a changing environment?
The species must sleep for longer periods to ensure its survival.
The species must reproduce rapidly to ensure its survival.
The species must adapt to the environment to ensure its survival.
The species must eat less food to ensure its survival.
Option c. The species must adapt to the environment to ensure its survival correctly describes what needs a species to ensure its survival in a changing environment.
What is the relative meaning of adaptation to the enviroment in evolution?The relative meaning of adaptation to the enviroment in evolution is the fact that these changes increase the survival and reproduction rate.
Therefore, with this data, we can see that the relative meaning of adaptation to the enviroment in evolution is required to ensure the survival of the species in the environment.
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write the number of chromosomes and amount of dna ( ng ) present per cell at the end of telophase i of meiosis (after cytokinesis).
The two new groups of chromosomes are surrounded by membranes in the concluding phase, called telophase, and the mitotic spindles that gave these groups their strength are broken down.
The cell has two 46-chromosome groups when mitosis is finished, each encased in its own nuclear membrane. There are 23 chromosomes at the telophase-II stage and 46 chromosomes in the human genome. The stage of telophase-II is when the nuclear envelope surrounds the collection of chromosomes at each spindle pole. Each cell will have 10 unreplicated chromosomes, the same number as the progenitor cell. There is only one DNA molecule per unreplicated chromosome. Therefore, each cell will contain 10 DNA molecules at the conclusion of telophase/cytokinesis.
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