Answer:
Stabilizing natural selection keeps gene frequencies constant in a population. The normal, most common traits are selected for and preserved so only a limited amount of evolution occurs and species can remain unchanged even over long periods of time.
Explanation:
A biological process called reproduction occurs when an organism creates young (offspring) of the same species.
What influence natural selection for survival of species?Gene frequencies in a population are maintained constant through stabilizing natural selection.
Because only a small amount of evolution takes place and the most typical, most prevalent features are preserved, species can persist unmodified even across very lengthy epochs.
It is among the most crucial traits shared by all living things. While not necessary for an individual's existence, reproduction is necessary for the survival of a whole species.
Therefore, natural selection has allowed species such as sharks and alligators to remain genetically stable for thousands of years.
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when was Nigeria amalgamated?
Answer:
January 1, 1914,
Explanation:
answer this question.......asap
What it's called when scientists explore the world around them
Answer:
1. Observe
2. Research
3. Geology
Explanation:
Hope this helped!
Answer
A. Making observations
Explanation:
* Apply Concepts A particular plants diploid number of chromosomes is 50. Describe the number of chromosomes in one of the plant's cells during its sporophyte phase and during its gametophyte phase,
Chromosomes have hereditary function that are capable of self-duplication and they have thread-like structures seen inside the nucleus of plant and animal. In plants, they go through a cycle called alteration of generation that has multicellular stages. One is sporophyte that is a diploid, and the other is gametophyte with a haploid.
Moreover, spores are produce through meiosis so it go through a process of chromosome reduction in order to create a haploid spores. While, gametes undergo mitosis and the structure is already a haploid, which means that the number of chromosomes will not change in order to produce haploid. In this case, the plant have both spores and gametes and the similarities is that, they are both singles celled and a haploid. Therefore, the number of the chromosome in the gametophyte generation is also 32.
The relative locations of each known gene can be shown on a ____________________ map.
Answer:
genetic
Explanation:
Why is the regulation of a cell important?
Explanation:
The cell cycle is the most important process in the growth of an organism.
Explanation:
Cell cycle is the fundamental process by which a cell matures, synthesises DNA and divides to form daughter cells. Somatic cells divide regularly.
All multicellular organisms use cell division for growth, maintenance and repair of cells and tissues. Unicellular organisms use this process to reproduce.
Cell cycle affects our daily lives. Most cancers are a result of inappropriate cell division arising due to aberrations in normal cell cycle regulation. Stem cell biology and regulation in growth of organs also involves extensive study of cell cycle.
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Which of the following best describes the purpose of the chromosomes in the nucleusof a cell?
A. To store the genetic instructions needed to specify traits
B. To release energy by breaking down food molecules
C. To transport nutrients into and out of the cell
D. To protect the cell from microorganisms
Answer:
A. To store the genetic instructions needed to specify traits.
A chromosome is made of a strand of DNA that's encoded with genes.
Taigas, tundras, and tropical rainforests share what common abiotic component A:nutrient-poor soil B: freezing temperatures C:a lot of sunlight D:little precipitation
Taigas, tundras, and tropical rainforests have a lot of sunlight
TundraIt has low temperatures throughout the year. Winter is quite severe and summer is cold.
TaigaAlso called coniferous forest due to the predominance of pine and spruce.
Tropical forestThe vegetation is dense and forms strata, depending on the canopy cover of the trees, which gives rise to different microclimates. The vegetation also has epiphytes, lianas and lichens.
With this information, we can conclude that the tundra, taiga and tropical forest have in common the good disposition of sunlight. Correct answer C:a lot of sunlight.
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what do we call it when two or more genes determine an organism's trait
Answer:
The traits an organism displays are ultimately determined by the genes it inherited from its parents, in other words by its genotype. Variant copies of a gene are called alleles, and an individual's genotype is the sum of all the alleles inherited from the parents.
Explanation:
Answer: polygenic
Explanation:
The smooth endoplasmic reticulum Group of answer choices converts sunlight into chemical energy. stores water, nutrients, and enzymes. is the site where lipids destined for other cellular compartments are manufactured. produces the energy needed to run chemical reactions in the cell.
Answer:
is the site where lipids destined for other cellular compartments are manufactured.
Explanation:
This is because smooth endoplasmic recticulum is an organelles found in eukaryotic organisms that lack membrane bound ribosomes and are found in cells that has much lipids like ovaries, testes, oil glands in the skin e.t.c. They are important in the synthesis of lipids is the site where lipids , Phospholipids, steroid hormones.
They also play a major role in detoxification of harmful metabolic by products and metabolic processes of calcium ions within the cell
Why is carbon a very important element? A Carbon is the central element to all living organisms B. Carbon is key to producing electricity C. The Sun needs carbon to produce energe D. A all of the above
Answer:
D
Explanation:
Carbon is important in biology because without it, life itself would not exist. Carbon is important in everyday life for all living beings in order for them to live, grow, and reproduce. Carbon compounds are also very versatile and they are in many objects we use every day.
Carbon is the central element to all living organisms. It is the basis to all life on earth. By studying carbon and organic compounds, scientists can learn more about life, the human body, and how it works. Organic Molecules Most organic molecules are made up of long rings or chains of carbon atoms with atoms of other elements attached.
The sun takes an integral role in the photosynthesis stage of the Carbon Cycle. Photosynthesis refers to the process by which plants take in carbon dioxide and water (the products of respiration), and convert it to oxygen, powered by the energy of the sun. Photosynthesis occurs in both land plants and ocean dwelling organisms like algae.
Carbon is the central element to all living organisms, it is key to producing electricity, and the sun needs carbon to produce energy. Therefore, option D is correct.
What is the importance of carbon?Because it is present in every biomolecule, carbon is regarded as the element of life. Carbon is a component of all vital biomolecules, including lipids, nucleic acids, proteins, and carbohydrates. The presence of four valence electrons in carbon makes it so distinctive.
The majority of the world's electricity comes from fossil fuels, which also make up the vast majority of the world's transportation fuels like gasoline and diesel. Energy is extracted from fossil fuels through the combustion of hydrocarbons.
Carbon, nitrogen, and oxygen processes convert hydrogen into helium but do not exhaust themselves, providing around 1% of the sun's energy. Hence, option D is correct.
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11. The following graph shows the results of an experiment done by four different
groups. Each group took a rubber band and recorded how far it stretched as
they added weights to it. What is the independent (test) variable in this
experiment?
Group 1
Group 2
Group 3 Group 4
stretch
weight
I
A) The distance the rubber band stretched
B) The number of weights added to the rubber band
C) The different types of rubber bands
D) The same type of rubber bands
Which circulation ensures proper levels of nutrients in the blood for newborns through adults?
а a
cardiac circulation
b
fetal circulation
С
hepatic portal circulation
d
pulmonic circulation
change to indirect speech
1, he said,"what a wonderful event it is!"
Answer:
he said that the event was wonderful
QUESTION 4
2 poin
4. What are the three areas in which a communication disorder may occur?
Answer:
Speech, fluency, articulation.
What would the growth pattern of Clostridium sporogenes and Micrococcus luteus be in a thioglycolate medium?
Answer:
Based on experiment, since that microorganisms are obligate anerobes, they will likely to accumulate or settle at the top of the medium since they are strictly living with the presence of oxygen or toxicated with no presence of oxygen.
Which of the following is true regarding cell type and cytoplasm?
A.
Prokaryotic cells have cytoplasm and eukaryotic cells do not.
B.
Eukaryotic cells have cytoplasm and prokaryotic cells do not.
C.
Neither prokaryotic nor eukaryotic cells have cytoplasm.
D.
Prokaryotic and eukaryotic cells have cytoplasm.
Answer:
Eukaryotic Cells have cytoplasm , prokaryotic cells do not.
Explanation:
In order for a protein to be an integral membrane protein it would have to be which of the following?
a. hydrophilic
b. hydrophobic
c. amphipathic
d. completely covered with phospholipids
e. exposed on only one surface of the membrane
Answer:
amphipathic, with at lest one hydrophobic region
Explanation:
For a protein to be an integral membrane protein it would have (C) : amphipathic
Amphipathic is a chemical property of a protein molecule whereby it has both hydrophilic and hydrophobics portions in the its molecule. ( i.e. It contains water soluble and non-water soluble portions ) and for a protein to be an integral membrane it has to posses both water soluble and non-water soluble portions in its molecule.
Hence we can conclude that for a protein to be considered an integral membrane protein it will posses an Amphipathic property.
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The process of fermentation takes place
Answer:
Fermentation is an anaerobic process in which energy can be released from glucose even though oxygen is not available.
Explanation:
Fermentation occurs in yeast cells, and a form of fermentation takes place in bacteria and in the muscle cells of animals.
What are the bonds of dna
Answer:
The bonds are covalent and hydrogen.
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The typical human adult uses about 160 g of glucose per day, 120 g of which is used by the brain. The available reserve of glucose (~20 g of circulating glucose and ~190 g of glycogen) is adequate for about one day. After the reserve has been depleted during starvation, what other sources can be used to produce glucose
Answer:
Fats and proteins that are present in liver, kidneys, and muscles.
Explanation:
When the reserve of glucose is used by the body during starvation, our body uses fats and proteins that are present in liver, kidneys, muscles etc and convert these fats and proteins into glucose. There is high amount of fats and proteins present in our body which can be used when the glucose reserves depleted from the body during starvation so we can conclude that the fats and proteins are the sources that can be used to produce glucose for the body.
Help melee please...
Answer:
25%
Explanation:
The image is the punnet square. :)
Why where the Galapagos Turtles different from the mainland turtles if they shared a common ancestor?
Which of the following does NOT affects the type of severe weather a location gets? *
latitude
normal weather patterns
high pressure
geography
Answer:
high pressure
I think it is option C
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is the vascular system in plants an actual organ system?
Answer:
Explanation:
Answer:
NO!
Explanation:
"A plant has two organ systems: 1) the shoot system, and 2) the root system."
A deletion mutation occuring in the region of DNA which encodes for a sigma subunit of RNA polymerase results in decreased binding to the promoter region of the DNA sequence which encodes for alpha, beta, and omega subunits of RNA polymerase. What is the effect
Answer:
The correct answer is - a reduced expression of alpha, beta, and omega subunits of RNA polymerase.
Explanation:
Sigma subunit of RNA polymerase is the subunit that the holoenzyme, the other part of the enzyme, identifies and attaches with the specific DNA site called promotors that is responsible for coding the alpha, beta, and omega subunits of this enzyme.
As it is given that there is a deletion in the sigma subunit due to mutation that results in decreased the sigma factor's binding affinity to the promoter region. That ultimately leads to less or unable to bind properly to the promoter and the level of gene expression to fall or be reduced.
1. Given the following DNA sequence, determine the correct order of amino acids.
GGCATGAGGTAA
2. For this mutated sequence:
• Determine the correct order of amino acids,
• How the two strings of amino acids will differ.
• also circle the mutation
GGAATGAGGTAA
Which of these is the change.
No Change-
1 Amino acid changed-
Premature stop signal -
No stop signal-
1 amino acid added/deleted -
All the amino acids changed after the point of mutation-
Answer: 1- CCGT ACT CCATT
2- CCTTACTCCATT
Explanation:
A-----T
C-----G
G-----C
T-----A
1. At which type of boundary does new oceanic crust form?
2. Why is this type of boundary also known as a constructive boundary?
Answer:
1. the boundary that the ocean crust forms is the Divergent Boundary.
2. both these plates move apart and cause earthquakes.
Explanation:
1. these boundaries are known to crash against each other causing earthquakes, but these boundaries are also form the oceanic crust.
2. when they move apart they cause earthquakes and volcano's. an example of this is the Mid- Atlantic ridge.
A molecule of DNA was analyzed and found to contain 18% guanine. What is the amount of: (Cytosine: Adenine:
Your answer
Answer:
Cytosine: 32%
Adenine: 32%
Thymine: 18%
Explanation:
% purines= % pyrimidines
Therefore, the percent of guanine and adenine should add up to 50%, where the percent of cytosine and thymine should also add up to 50%
You are a scientist working on characterizing marine microbes that have a major role in the global nitrogen cycle. You finally culture the bacteria you are interested in and find it can grow at twice the rate that you expected, and you suspect it can make proteins more quickly than other bacteria. You want to better characterize genes involved in translation, particularly the enzymatic component of the ribosome. To do that, you must sequence which gene(s) involved in translation
Answer:
The correct answer would be - the 16S rRNA gene.
Explanation:
16S ribosomal RNA is a small subunit of ribosomes found in prokaryotic cells such as microbes. It is coded by the 16S rRNA gene that is used in constructing phylogenies again due to the slow rate of evolution.
This gene is suggested to be used as a molecular clock that is more reliable as it has sequences that show similar functionalities in distantly related bacterial lineages. It is the gene that produces protein more quickly than other bacteria.