1- Explain the relationship between evolution, allele frequencies, and populatio
ID: 47338 • Letter: 1
Question
1- Explain the relationship between evolution, allele frequencies, and populations.
2- Summarize the evidence Darwin used to develop his theory of evolution by natural selection.
3- Explain the link between natural selection and reproductive success.
4- Use the Hardy-Weinberg equation to calculate allele and genotype frequencies.
5- Explain how natural selection can maintain harmful alleles in a population. List the lines of evidence that support evolutionary history.
6- Explain why hard body parts are more likely to appear in the fossil record.
7- Describe two ways that the age of a fossil can be determined.
8- Explain how biogeography can be used to explain the evolution of a species.
9- Compare and contrast homologous, vestigial, and analogous structures.
10- Explain how embryonic development can reveal evolutionary relationships.
1- Explain the relationship between evolution, allele frequencies, and populations.
2- Summarize the evidence Darwin used to develop his theory of evolution by natural selection.
3- Explain the link between natural selection and reproductive success.
4- Use the Hardy-Weinberg equation to calculate allele and genotype frequencies.
5- Explain how natural selection can maintain harmful alleles in a population. List the lines of evidence that support evolutionary history.
6- Explain why hard body parts are more likely to appear in the fossil record.
7- Describe two ways that the age of a fossil can be determined.
8- Explain how biogeography can be used to explain the evolution of a species.
9- Compare and contrast homologous, vestigial, and analogous structures.
10- Explain how embryonic development can reveal evolutionary relationships.
Explanation / Answer
Evolution, allele frequencies and populations are interrelated things. In natural selection, evolution takes place in gene or allele level, which brings changes in the frequency of gene pool and population size.
Five types of evidences were collected: fossil layers, remains of ancient organism, similarities with the current living beings, similarities with DNA, and similarities with embryo development.
Fitness is the key link between natural selection and reproductive success.
Using Hardy-weinberg principle, the frequency of alleles are calculated by p + q = 1; whereas frequency of genotypes is calculated by p2 + 2pq + q2 = 1
Depending on the dominance (either dominant or recessive) and zygocity (heterozygotes or homozygotes) the natural selection balances the equilibrium. Harmful alleles can survive in heterozygous recessive condition rather than homozygous recessive condition.
Hard body parts like teeth, shells and bones appear much in fossil records because they decay slowly.
Relative dating and absolute dating
Biogeography provides details about the existing habitats at the prescribed time period.
Homologous means similar, vestigial means non-essential, analogous means dissimilar
All the organisms develop from a single zygote, so the pattern of development taking place in the embryonic layers reveals the evolution of different species
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