Answer:
(three) crossing over, mutations caused during crossing over, and independent assortment.
Explanation:
Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote. Recombination or crossing over occurs during prophase I.
A model showing two possible arrangements of chromosomes during meiosis is shown in Figure 1.Figure 1. Two possible arrangements of chromosomes during meiosis
Which of the following questions about genetic diversity could most appropriately be answered by an analysis of the model in Figure 1?
A) Does crossing-over generate more genetic diversity than the fusion of gametes does?
B) Does DNA methylation prevent independent assortment during metaphase II?
C) How does the independent assortment of the two sets of homologous chromosomes increase genetic diversity?
D) Do daughter cells that are not genetically identical to parent cells produce viable zygotes?
C) How does the independent assortment of the two sets of homologous chromosomes increase genetic diversity?
What is independent assortment?Independent assortment is a mechanism that contributes to genetic diversity during meiosis. It refers to the random alignment and separation of homologous chromosomes during the first meiotic division (meiosis I), which leads to different combinations of chromosomes being passed on to the daughter cells.
This means that each daughter cell will have a unique combination of chromosomes. When the gametes (sperm or egg cells) produced by meiosis fuse during fertilization, they can give rise to offspring with a unique combination of genetic information, further increasing genetic diversity within a population.
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How can an organism's environment affect its traits?
First, I read that so incorrectly. Awkward.
An organism's environment affects its physical and self traits by making them adapt. Charles Darwin had discovered this theory with the finches. Places that were harder to get food would make these finches physical change over evolution to help them survive. It changes the animals habits depending on their resources. If a bird eats berries but there is no berries then the bird will have to change its diet or it will die.
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Answer:
D: Bb
Explanation:
Answer:
bb
Explanation:
Bro, I can't explain because anything I say says that it contains a link
actually I don't even look this up bc I already learned this so my bad
Matching evolutionary terms
Complete the sentences with the correct terms.
selection
Environmental conditions often favor one__
over another.
Answer:
phenotype or trait
Explanation: if it is really cold a mouse with thicker fur (phenotype) will do better
Environmental conditions often favor one selection over another.
In the context of evolution, selection refers to the process by which certain traits or characteristics become more or less common in a population over time. This process occurs due to environmental conditions that favor certain individuals with advantageous traits, leading to their increased survival and reproduction.
For example, consider a population of birds living in a forest with two distinct color morphs: light and dark. If the forest becomes darker due to increased tree cover, the dark-colored birds might be better camouflaged and have a higher chance of surviving and reproducing. Over time, the proportion of dark-colored birds in the population would increase, as they have a selective advantage in the new environmental conditions.
Similarly, if the forest becomes lighter, the light-colored birds may become more successful in avoiding predation and finding mates. In this case, the environmental conditions would favor the light-colored birds, leading to an increase in their frequency within the population.
Therefore, the term "selection" refers to the process by which environmental conditions favor certain individuals or traits, resulting in changes in the frequency of those traits within a population over time.
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how much acid is in the world
Answer:
lots
its on cafeteria food at ur school
Explanation:
Could you be more precise?
There are over 100 types of acid.
These are a few for example:
H2SO3Sulfurous Acid
H2SO4Sulfuric Acid
H2SO2Hyposulfurous Acid
H2SO5Persulfuric Acid
H2S2O7Pyrosulfuric Acid
H2S2O5Disulfurous Acid
H2S2O4Dithionous Acid
H2S4O6Tetrathionic Acid
H2S2O2Thiosulfurous AcidH2SHydrosulfuric Acid
H2S2O8Peroxydisulfuric AcidHClO4Perchloric Acid
A forensics expert has obtained a sample of human blood from a crime scene. How can DNA fingerprinting be useful for identifying the person who left
the blood at the crime scene?
A by identifying the sequence of nucleotides in the DNA of blood cells
B. by comparing DNA from the blood cells with DNA from suspects
C. by identifying certain genetically controlled traits of suspects, such as eye shape and blood type
D. by comparing karyotypes made from blood cells at the crime scene and blood cells from suspects
Answer:
B - by comparing DNA from the blood cells with DNA from suspects!
Explanation:
DNA fingerprinting is a laboratory technique used to establish a link between biological evidence and a suspect in a criminal investigation.
A DNA sample taken from a crime scene is compared with a DNA sample from a suspect.
If the two DNA profiles are a match, then the evidence came from that suspect. (from www.genome.gov )
Hope this helps! :]
A forensics expert has obtained a sample of human blood from a crime scene, DNA fingerprinting may be useful by comparing DNA from the blood cells with DNA from suspects, which is option B.
What is DNA fingerprinting?DNA fingerprinting is a technique used to identify individuals based on their unique DNA profiles, and by analyzing the sequence of nucleotides in an individual's DNA, forensic scientists can create a DNA profile that is unique to that individual. So to identify the person who left the blood at the crime scene, forensic scientists would analyze the DNA in the blood sample and create a DNA profile, and then find out the criminal based on the DNA fingerprinting.
Hence, DNA fingerprinting may be useful by comparing DNA from the blood cells with DNA from suspects, which is option B.
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using breast cancer as an example calculate the percentage of survival for this cancer type
The polysaccharide that is responsible for the strong structural nature of plant cell walls is
The polysaccharide that is responsible for the strong structural nature of cell walls of plants is cellulose.
The cellulose is an organic molecule that is made up of several units of glucose monomer. The cellulose which make up a large percentage of plant cell walls are composed of a network of several units of glucose monomer that are tightly linked together.
The cellulose, as well as lignin and hemicellulose, which constitutes the tensile fibers in the cell walls of plants, is the polysaccharide responsible for the strong structural nature of plant cell walls.
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Answer:
The second one, smooth shape is dominant and wrinkled is recessive
Explanation:
Answer:
The answer would be B
Explanation:
The wrinkly pea is recessive meaning it is less likely to pass on its traits.
Which of these are true?
a) there are many types of ecosystems all over the world.
b) there are only a few types of ecosystems all over the world.
Answer:
a is your answer, I hope it helps!
a!!!!!ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ
Why would water move faster through one kind of tree compared to another, and what might that tell us about their life cycle and susceptibility to environmental changes?
Answer:
Due to the presence of larger vessels.
Explanation:
Due to the presence of larger vessels of hardwoods in the tree, water move faster in that tree as compared to other type of plants. in smaller plants, small vessels are present which able them to move less amount of water as compared to large trees which have large vessels. It tells us that the tree adopted the environmental changes so that's why to overcome the change, they use more water.
During meiosis, the genes for eye color and hair color separate in the formation of gametes . This is explained by
A)crossing over B)recombination
C)the law of segregation .
D) the law of independent assortment .
Answer:
d) the laws of independent assortment
Explanation:
just took it
The top two human activities that threaten the habitats of endangered species globally are:
a.) Over-exploitation and agriculture
b.) Urban development and invasion of non-native species
c.) System modification and war
d.) Pollution and climate change
Answer: D
Explanation:
During sexual reproduction, the offspring inherit their traits from __________. both parents themselves the father the mother
Answer:
Both parents
Explanation:
Punnett squares will show that for each trait (eye color, hair color, hair type, etc.) there are at least 3 different options (for a 2x2 Punnett square). I've also seen 4x4 Punnett squares where two traits are used.
What is the antibody made during the second contact with an antigen called?
help pls :) i need a unique answer that isn’t plagiarism
I think thats because small animals have small body that can hide in a safe place. Like example if small animals hide go down to the earth, and the meteorite hit the earth, they will safe down to the ground.
Not like larger animals, they can only hide up he surface and when the meteorites came, they died.
Also some small animals such as cockroaches have ability to adapt to changes.
Over time, what will to happen to the populations of light and dark moths on light trees?
Answer:
Explanation:white moths will be spotted easier and killed and the population would drop while the dark moths population will rise
The population of white moths at the light tress will increase over time with the process of natural selection.
The trees are a light color population. Dark moths are unable to camouflage with the tress, while white moths camouflage with the trees.
What happens to white moths?The white and black moths at the tree are an example of a tree ecosystem. The moths are the target for the predators.
The process of natural selection is the evolutionary process with the survival of the fittest. The species that are able to survive in the inappropriate conditions are able to evolve.
In the tree ecosystem, the white moths are camouflaged with the trees. They will not be an easy target for predators. They will survive with the theory of natural selection.
The black moths are not camouflaged with the tree ecosystem. They are easily identified by the predators and are killed.
Thus, white moths are the fittest and with natural selection, they evolve.
Therefore, the population of white moths at the light tress will increase with natural selection.
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Organisms are placed into kingdoms based on...
Their type of
name the four major groups in the plant kingdom and discuss the major evolutionary trends across the groups
Answer:
The kingdom Plantae consists of four major plant groups on land: bryophytes (mosses), pteridophytes (ferns), gymnosperms (cone-bearing plants), and angiosperms (flowering plants). Plants may be categorized as vascular or nonvascular. A vascular plant has tissues for transporting water or sap. Nonvascular plants do not.
Which of the following living things can have mutations?Plants
Bacteria
Animals
Fungi
Protists
Answer:
Mutation is any change in DNA sequence of an organism. Mutantion can occur in any living organism including plants, animals, fungi, bacteria and protists.
Explanation:
Data from embyros can be used to help establish evolutionary relationships. True or false
Answer:
True
Explanation:
The study of the formation and development of the embryo is very useful in evolutionary biology in order to determine similarities derived from a common ancestor (i.e. homologies). In consequence, embryology is a discipline used to establish relationships between species and higher taxa. For example, vestigial organs and/or tissues (e.g., tails in humans) can be observed in the embryos during the first stages of development. In this regard, embryology has been an important aspect of the evolutionary theory proposed by Darwin (1859) by evidencing the process of species radiation from their ancient ancestors.
In general, when performing spread plates, __________
mL of cell suspension is added to the plate to prevent the formation of a microbial ______________.
Adding more than 1 mL of cell suspension to an agar plate will result in a ____________.
Adding less than 1 mL of cell suspension to an agar plate will result in a ____________.
Answer:
a) 0.1 mL
b) contamination
c) clumping of colonies
d) Uneven colonies
Explanation:
In general, when performing spread plates, 0.1 mL
mL of cell suspension is added to the plate to prevent the formation of a microbial contamination
Adding more than 1 mL of cell suspension to an agar plate will result in a clumping of colonies.
Adding less than 1 mL of cell suspension to an agar plate will result in a Uneven colonies
In general, when performing spread plates, 0.1mL of cell
suspension is added to the plate to prevent the formation of a
microbial contamination.
Adding more than 1 mL of cell suspension to an agar plate will
result in a clumping of colonies. Adding less than 1 mL of cell
suspension to an agar plate will result in an uneven colony.
What is a Colony?
These contain two or more conspecific individuals living in close
association with one another.
The procedures given above must be adhered to in the
preparation of cell cultures in the laboratory.
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Explain why two siblings except identical twins have the exactly the same alleles
Answer:
having exactly the same DNA sequences, twins start accumulating genetic variation from the earliest stages of development, researchers at Iceland-based company deCODE genetics found, meaning that one twin harbors variants that aren't present in the other.
A geneticist is trying to recreate a strand of DNA from a crime scene investigation. The strand of DNA recovered from the scene was 1800 bases long. The geneticist has determined that the strand contained 425 thymine
nucleotides. Based on this information, identify the number of cytosine nucleotides
Answer:
475
Explanation:
The strand is only made up of Adenine, Thymine, Cytosine and Guanine. There will be the same number of Adenine as there are Thymine and the same number of Cytosine as there are Guanine.
We know there are 425 Thymine. This means there are also 425 Adenine. Therefore, you would subtract 850 (425x2) from 1800 to find the amount of Cytosine and Guanine left, which is 950.
Out of the 950, half will be Cytosine and half Guanine. 950/2 is 475.