Natural selection, genetic drift, and gene flow are mechanisms that cause changes in allele frequencies over time, contrary to the Hardy-Weinberg assumption, and evolution occurs.
Evolution refers to changes in the genetic composition of a population of organisms over time. There are four forces that work together to effect evolution: mutation, natural selection, genetic drift, and gene flow. First, natural selection is a mechanism by which organisms with beneficial traits become more likely to inherit those traits, increasing the population of the next generation.Genetic drift results from random changes in allele frequencies. , these changes may restore or promote genetic diversity. Gene flow is the exchange of genes between populations by migration or mating, which can introduce new alleles and introduce genetic variation into populations. Ultimately, mutation produces genetic variation by spontaneously forming new alleles.
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A young goat has downward-curved horns. Its father has upward-curved horns while its mother has downward-curved horns. Which of these statements is the explanation?
A young goat has downward-curved horns. One copy of the gene for horn shape was passed down to the young goat from its father and one copy from its mother is the explanation.
A ratio of dominant to recessive traits is the result of the gene combination from the parents, as stated by Mendel's second law of inheritance, which states that a pair of traits segregate independently of another pair during gamete formation. In phenotype sharing, the offspring will only exhibit the dominant trait when parents with required traits are crossed together. This suggests that the dominant mother and not the dominant father passed on the horn-shaped gene to the young goat.
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A. Describe the scientific method, using pasteur's swan-necked flask experiment as an example
Louis Pasteur conducted an experiment to disprove the theory of spontaneous generation using a swan-necked flask.
The theory of spontaneous generation stated that life happens to originate from non-living matter. A lot of scientists were in support and also against the theory. Louis Pasteur conducted an experiment using the swan-necked flask to disprove this theory.
In his experiment, he took a swan-necked flask which was shaped like an "S" and in that flask he put a nutrition rich broth. After this, he boiled the broth in order to kill any microorganisms which were already present in the broth. The broth was exposed to the air left undisturbed.
He then observed that regardless for how long he let the broth sit, the dust particles and other things never made it to the broth and no growth of microorganisms was seen. This proved that the microorganisms do not arise out of non-living matter but are introduced through air.
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Needs help ASAP
Which of the following is an example of genetic engineering?
A. A string of three bases within an RNA molecule codes for a specific amino acid
B. A string of amino acids bonds together to form a protein that controls a trait
C. A bacterial cell produces human insulin because human DNA has been added to the bacterial DNA
D. And the nucleus of a human cell DNA strands separate and are used as a template for new RNA molecules
A bacterial cell produces human insulin because human DNA has been added to the bacterial DNA is an example of genetic engineering.
What do you mean by genetic engineering?Genetic engineering, also called genetic modification or genetic manipulation, is the modification and manipulation of an organism's genes using technology.
For example, genetic engineering may involve adding a gene from one species to an organism from a different species to produce a desired trait. Used in research and industry, genetic engineering has been applied to the production of cancer therapies.
Genetic engineering is accomplished in three basic steps. These are (1) The isolation of DNA fragments from a donor organism; (2) The insertion of an isolated donor DNA fragment into a vector genome and (3) The growth of a recombinant vector in an appropriate host.
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Due to a mutation, an autosomal cell in a multicellular organism does not receive the normal signal to stop dividing. What effect will this most likely have on the organism?
A.
It will experience tumor growth.
B.
It will be unable to reproduce.
C.
It will age at an increased rate.
D.
Its cells will become inactive.
The DNA of a cell is not programmed to coordinate the activities needed to keep a large cell alive. How does cell division help the cell avoid DNA overload
The process of cell division helps the cell to avoid DNA overload by the following mechanism: Each daughter cell has its own copy of DNA and can coordinate all the activities of a smaller cell.
Thus, the correct option for this question is B.
Cell division may be defined as a process through which a parent cell significantly divides into two daughter cells with an identical amount of genetic material.
DNA overload deals with the mechanism of the larger the cell, the greater the requirement for the positioning of the cell's DNA. In order to prevent this mechanism, a cell undergoes the process of division that limits the phenomena of DNA overloading.
This happens with the help of synthesizing two new daughter cells that limit the size of the parental cell. Therefore, the correct option for this question is B.
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Full Question
The DNA of a cell is not programmed to coordinate the activities needed to keep a large cell alive. How does cell division help the cell avoid DNA overload
A. When a cell divides there is much less DNA
created than in the large cell, increasing the
overload.
B. Each daughter cell has its own copy of DNA
and can coordinate all the activities of a smaller
cell.
C. Cell division does not help cells to avoid DNA
overload.
Which of the following is a feature of the "tube-within-a-tube" body plan in most animal phyla?A) The outer tube consists of a hard exoskeleton.B) The outer tube consists of digestive organs.C) The mouth and anus form the ends of the inner tube.D) The two "tubes" are separated by tissue that comes from embryonic endoderm.
Answer: C-the mouth and anus form the ends of the inner tube.
Explanation:
The picture below shows four locations on the map of Australia.
Which of these locations is most likely to experience moderate climate throughout the year? FLVS
Location A
Location B
Location C
Location D
I choose answer b on this map
Plant selection is important for a rain garden. Which of the following best describes the types of plants that would be most effective to use in the rain garden in this experimental design to reduce the impact of urban runoff
Plants that are native to the local area and are well-suited to the soil and climate would be most effective to use in a rain garden to reduce the impact of urban runoff.
These plants have deep root systems that help to absorb and filter water, reducing the amount of runoff that enters local waterways. They also help to reduce erosion and improve water quality. Additionally, plants that are drought-tolerant and able to withstand periods of standing water would be beneficial, as rain gardens can hold water for extended periods. It is important to note that the choice of plants will depend on the local conditions and the experimental design of the rain garden, for example, the pH of the soil, the amount of sun exposure, and the size and location of the rain garden. An expert in the field of horticulture or hydrology would be best suited to make recommendations for plants that would be most effective in a given location.
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What are the light reactions of plants and in what organelle do they occur?
The light reactions of plants are a series of photochemical reactions that occur in the chloroplasts of plant cells. These reactions convert light energy into chemical energy in the form of ATP and NADPH.
The light reactions are divided into two stages: the light-dependent reactions and the light-independent reactions. The light-dependent reactions take place in the thylakoid membrane and involve the chloroplasts absorption of light energy by pigments, the transfer of electrons through a series of electron carriers, and the production of ATP and NADPH. The independent light reactions, also known as the Calvin cycle, take place in the stroma of chloroplasts and use the ATP and NADPH produced in the light-dependent reactions to fix carbon dioxide and create glucose and other sugars.
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What is the end result when one human cell 46 DNA molecules divides by mitosis?
when one human cell 46 DNA molecules divides by mitosis, the cell then splits in two by a process called cytokinesis, creating two clones of the original cell, each with 46 monovalent chromosomes.
What is Mitosis?
Mitosis is a type of cell division in which a cell (mother cell) divides to produce two new cells of her (daughter cells) that are genetically identical to itself. In the context of the cell cycle, mitosis is the part of the mitotic process in which the DNA in the cell's nucleus is divided into her two equal sets of chromosomes.
The purpose of mitosis is to form more diploid cells. It works by copying each chromosome and spreading the copies out on different sides of the cell.
Mitosis is required for growth, repair, and asexual reproduction. It plays an important role in the development of organisms. In unicellular organisms, mitosis is thought to be the process of asexual reproduction.
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Where most ATP is created in mitochondria?
Most ATP is produced in the mitochondrial matrix, which is the fluid-filled space inside the inner membrane of the mitochondria.
The process of ATP production in the mitochondria is called cellular respiration. It starts with the breakdown of glucose and other molecules in the cytoplasm by the process of glycolysis, which generates a small amount of ATP. The majority of the ATP is generated in the Mitochondria during the process of oxidative phosphorylation, where the electrons from the breakdown of glucose are passed through a series of protein complexes in the inner mitochondrial membrane, which generates a proton gradient that drives the production of ATP via ATP synthase.
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A field of many different wildflowers would ve considered a(n)
1. Community
2. Population
3. Ecosystem
4. Niche
A field of many different wildflowers considered as a community.
In the field of biology, the term "community" refers to a group of different species that live in close proximity to one another and interact with one another. Since a field of varied wildflowers is home to more than one species that coexist in the same region, we may refer to it as a community.
A population is defined as all of the creatures of the same species that are found in the same location at the same time; whereas an ecosystem is defined as all of the living and non-living components that make up an area; on the other side, the function that an organism fulfills within its community is referred to as its "niche."
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1. What are alleles?
genes that always hide their traits, which are never exhibited
pieces of genes that are observable to the human eye
gene pieces found at certain sites on a chromosome
genes that always show their traits, which are never hidden
Answer:
c
Explanation:
a and d are definetly not ir
The Venn diagram compares aerobic and anaerobic respiration.
which statement could be categorized in the overlapping section of the Venn diagram?
A. uses pyruvic acid
B. has commercial uses
C. regenerates NADH
D. produces 36 ATP
The Venn diagram compares aerobic and anaerobic respiration. Uses of pyruvic acid could be categorized in the overlapping section of the Venn diagram.
In order to produce energy in the form of ATP molecules, aerobic respiration involves the complete breakdown of a glucose molecule in the presence of oxygen (36 molecules of ATP).
Contrarily, anaerobic respiration entails the partial breakdown of a glucose molecule to produce energy in the form of ATP molecules without the presence of oxygen (2 molecules of ATP).
The use of pyruvate is a characteristic shared by both aerobic and anaerobic respiration (pyruvic acid). The glycolytic process, which is the same for both processes, produces pyruvic acid.
While during anaerobic respiration, pyruvic acid is utilised to manufacture alcohol or lactic acid to renew NAD+, during aerobic respiration, pyruvic acid is used to build acetyl coenzyme A that enters the Krebs cycle.
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Answer:pyruvic acid is used
Explanation:i took it
Buffalo grass is a species of plant found on the grazing prairie of Wyoming. It is a tough grass that has silicates (compounds containing oxygen and silicon) that reinforce its leaves. This variation has allowed this type of grass to survive for many years in an adverse environment. This is an example of which mechanism of evolution? O Mutation O Natural Selection O Gene Flow Genetic Drift
As the variation of tough grass that has silicates (compounds containing oxygen and silicon) that reinforce its leaves has allowed this type of grass to survive for many years in an adverse environment, this is an example of b. natural selection.
This particular type of grass has adapted over time to survive in an adverse environment, due to its silicates (compounds containing oxygen and silicon) reinforcing its leaves. This is an example of natural selection, showing how the grass has been able to survive for many years despite the difficult conditions.
The variety of grass characterized by silicates (oxygen and silicon compounds) in its leaves has enabled it to survive in difficult environments over the years. This is a prime example of natural selection at work.
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What happens when protease is added to protein?
When protease is added, proteins breakes into smaller polypeptides or single amino acids, and forms new protein products.
A protease is an enzyme that catalyzes (increases reaction rate or "speeds up") proteolysis, breaking down proteins into smaller polypeptides or single amino acids and promoting the creation of new protein products. It is also known as a peptidase, proteinase, or proteolytic enzyme.
They achieve this by using hydrolysis, a mechanism in which water breaks bonds, to cleave the peptide bonds found in proteins. Protein digestion after ingestion, protein catabolism (the breakdown of aged proteins),[3][4] and cell signaling are only a few of the biological processes that proteases are involved in.
All living forms and viruses have proteases. They have repeatedly developed independently.
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the olecranal region is __________ to the acromial region.
Distal to the acromial region is the olecranal region. As a result, distal is used to fill in the blank.
A body part's or organ's location is described using directional terminology. They might be applied in reference to anatomical positions or to other structures or organs. Directional terminology includes proximal and distal, ventral and dorsal, superior and inferior, anterior and posterior, and medial and lateral.
The olecranon is the name for the long bone in the forearm called the ulna, which extends past the elbow. This bony protrusion is large, thick, and curved. The most pointed part of the elbow is formed by it, which is located across from the cubital fossa, also referred to as the elbow pit. Distal to the acromial area is where this is located.
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A group of herbivores are separated from their individual population. In the new environment, the only edible
vegetation grows underground.
-What would be a like likely structural adaptation that would occur?
-Explain how step by step how this would result in the population changing over time?
Over time, an adaptation that will make it easier for herbivores to acquire food is a long neck.
What are herbivores?An herbivore is an organism that mostly eats plants. A herbivore can be any size, from tiny insects like ants to huge, massive elephants. Herbivores make up a substantial portion of the food web, which is a description of the species that eat other animals in the wild.
Humans are they herbivores?We are physically herbivorous, despite the fact that many people prefer to consume both plants as meat, giving us the questionable moniker of "omnivores." The good news is that it's still possible to dine like our ancestors: Vegetables, fruits, nuts, and legumes form the foundation of a wholesome vegan diet.
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HELP!!!!! How do musical embellishments help enhance a piece of music?
One of the few things that everyone can enjoy and relate to is music. We are all made of music.
What is Musical Embellishments?It is an essential component of who we are. Since the very beginning of human history, music has existed in all civilizations and all countries. Music, according to Henry Wadsworth Longfellow, is the human race's global language.
Amazingly, music can unite disparate groups of individuals. We can learn how to relate to others and develop our empathy through music. Peace can be attained through music. Fear, separation, and misunderstanding obstacles can be destroyed with just one person's understanding.
In Northern Europe at the end of December 1914, during World War I, music effectively facilitated peace.
Therefore, One of the few things that everyone can enjoy and relate to is music. We are all made of music.
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Compare the Giant's Causeway with Devils Tower. In what ways are these formations similar? In what ways are they different
The Giant’s Causeway and Devils Tower are two naturally-formed rock formations that are both located in different parts of the world and are known for their respective geological and cultural significance. Despite their vastly different locations, these two formations have many similarities.
Both the Giant’s Causeway and Devils Tower were formed by volcanic activity. The Giant’s Causeway was formed approximately 60 million years ago when a volcanic eruption caused large basalt columns to form. Devils Tower was formed even earlier, around 50 million years ago, when a volcanic intrusion solidified and created the towering formation.
Both formations have also been carved by erosion over time. The Giant’s Causeway is made up of thousands of basalt columns, which have been carved by the sea into their current shape. Devils Tower is a single, towering column of igneous rock that is estimated to have been eroded by the Belle Fourche River over millions of years.
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Insects often get stuck in the sap of ancient trees. The sap along with the insect inside harden forming a fossil. What kind of fossil is this
You are correct in your assumption. The kind of fossil that has been described in the question is Crystallization. It is also called crystallized fossil. The correct option is B ,
The solidification of a liquid material into a highly structured solid whose atoms or molecules are arranged in a well-defined three-dimensional crystal lattice is known as crystallization. A unit cell is the smallest individual portion of a crystal. Millions of similar unit cells make up the crystal.
Crystallization is the process of separating solid substances in the form of crystals from a solution. This procedure is most commonly used to separate a pure solid from a solution. It is a bodily transformation.
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Full Question ;
Insects often get stuck in the sap of ancient trees. The sap along with the insect inside harden forming a fossil. What kind of fossil is this?
A Cast
B Crystallization------What I think it is.
C Mold
D Trace
Which living thing is a typical marsh inhabitant? O A. Sea star O B. Octopus O C. Alligator O D. Peat
Option C is Correct. Alligator marsh is a kind of wetland where herbaceous plants thrive.
These can be discovered close to the shores of lakes or any other body of water. A marsh is a zone where the aquatic and terrestrial ecosystems meet. Rushes, reeds, and grasses are the predominant flora in wetlands.
Alligators are a type of amphibian that is related to crocodiles. These inhabit freshwater and brackish environments. These amphibians complete their life cycle in environments on land and in water. They favor environments like marshes, lakes, swamps, ponds, and rivers as their home. Alligators may survive in the marsh ecosystem thanks to the muddy terrestrial habitat and freshwater.
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Controlled variable to the science experiment, “are fingerprints inherited?”
The controlled variable to the science experiment 'are fingerprints inherited' may include the use of molecular markers of known molecular size.
What is a controlled variable in a science experiment?A controlled variable in a science experiment is any condition that remains constant along the experiment and thus serves to make comparisons with the target experimental groups such as in this case the use of samples of individuals containing molecular markers of known molecular size, which allow us to identify the alleles of polymorphism in the sample after electrophoresis agarose gel and visualization under UV light.
Therefore, with this data, we can see that a controlled variable in a science experiment is any condition that stays the same in the experiment, and therefore it can be used to determine the presence or absence of a given allele in a DNA fingerprint.
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What are two variations of fur color in cats?
There are two basic colors of cats, black and red. These are called “dominant” colors. The color of all cats relates to these two colors in some way, by changing the color or covering it up. There is also a “dilute” of each color.
Generally, the colours, which can be termed differently depending on the breed, are: white, red, blue, black, cream, cinnamon, fawn and brown. The colour of a cat depends completely on genetics. The two primary colours in cats are black and red. There are six varieties of cat fur patterns. These are Tabby, Solid, Bicolor, Tricolor, Tortoiseshell, and Colorpoint.
A cat displaying a dominant color (black, red, tortie, etc.) must have a parent which displays a dominant color. Two recessive color parents (cream, blue, etc.) cannot produce an offspring of a dominant color (black, red, etc.).
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Why does an increase in number of cells cause growth?
Growth in all organisms occurs through the process of mitotic cell division. Cell division is the process of dividing old cells to form new cells, thereby increasing the number of cells needed for growth and various other activities in the body. It is a major and regular process essential to all life.
During mitosis, cells divide to form two identical daughter cells. All cells undergo mitosis and in this way the number of cells in the body increases and the organism grows.
Body tissue grows by increasing the number of cells that make it up. Cells in many tissues of the body divide and grow very rapidly into adulthood. As we grow, many cells mature and specialize in specific tasks in the body.
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How do you find the effort force of a second class lever?
In a class two lever the force of the effort multiplied by the distance of the effort from the fulcrum is opposite and equal to the force of the resistance multiplied by the distance of the resistance from the fulcrum.
The force utilized to move an object across a distance is called an effort force. To use a rudimentary machine to perform work on an item, this force must be overcome. By dividing the load by the number of ropes, we may get the pulley's effort force. F is the effort force in the diagram.
For instance, when using a shovel, you hold one end stable to serve as the fulcrum and pull up on a load of soil with your other hand. The resistance force is the dirt being picked up, and the effort force is the second hand.
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Raul has scraped his knee and noticed that after a week it had almost completely healed. Raul wondered how the skin was able to repair itself while looking exactly the same as his non-injured skin. In 3-5 sentences explain how mitosis plays a role in healing skin after injury and is able to maintain the look of the existing, non-injured skin.
Cells are created via cell department. And mitosis is an vital a part of this process. Mitosis creates equal copies of cells.
For example, it creates new pores and skin cells to update lifeless pores and skin cells. Interphase has 3 stages: G1, S and G2. During the G1 stage, the cell prepares for department via way of means of growing its mass. During the S stage, the cell synthesizes greater DNA. And at some point of the G2 stage, the cell synthesizes proteins because it keeps to grow. Before it is able to divide, a cell additionally wishes to have its lengthy uncoiled strands of DNA condensed into chromosomes. Otherwise, cell department might be like looking to break up a plate of spaghetti in half. Chromosomes are manufactured from bundles of DNA and protein. This makes them a lot simpler to transport around.
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What is a point DNA mutation?
A genetic mutation brought on by the replacement of one nucleotide with another nucleotide is called a point DNA mutation.
A mutation is a change to an organism's DNA sequence. Errors in DNA replication during cell division, exposure to mutagens, or viral infection can all cause mutations. Somatic mutations (which happen in body cells) cannot be passed on to offspring, whereas germline mutations (which happen in eggs and sperm) can.
Point mutations involve the substitution, deletion, or insertion of a single nitrogenous nucleotide into a single base pair of DNA. The sickle cell anemia condition is a case of a point mutation. The beta-globin chain of the blood's hemoglobin pigment is affected by a single base pair mutation.
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A student placed a rock in a graduated cylinder containing water causing the water level in the cylinder to increase by 20 mL. This increase represents the rocks
This growth corresponds to the volume of the rocks. According to the displacement caused by the boulder, the water in the grade cylinder rises.
What features does water have?Water molecules have a twisted, polar shape with partial p-sides on the hydrogen atoms and partial electrostatic force on the oxygen atoms. This is due to oxygen's greater electronegative nature, which draws electrons more potently than hydrogen does. Water is a fantastic solvent.
Why are the water so important?A water molecule is consisting of two hydrogen bonds bound to a carbon atom and has a bend overall structure. This is due to the fact that in addition to bonding with both hydrogen bond, the oxygen molecule also carries 2 sets of lone electrons. maintain the same temperature.
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Why are most point mutations harmless?
Most point mutations are harmless because the majority of the genetic code is non-coding, meaning that it does not contain instructions for making proteins.
Point mutations that occur in non-coding regions of the DNA will not affect the function of the proteins that are produced, and therefore, will not cause any harm.
Additionally, point mutations that occur in coding regions can sometimes result in a change in the amino acid sequence of a protein, but the change may not be significant enough to alter the protein's function. For example, a point mutation that changes one amino acid in a protein's sequence may not disrupt the protein's structure or function. This is known as a silent mutation.
Furthermore, some point mutations can even be beneficial by providing a selective advantage. For example, a point mutation that changes a codon for an amino acid to one that codes for a different amino acid but still allows the protein to function properly.
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