1. Explain three reasons why a mutation in a single allele might be difficult to
ID: 183801 • Letter: 1
Question
1. Explain three reasons why a mutation in a single allele might be difficult to detect in a population.
2. Why is natural selection the most likely evolutionary mechanism to lead to adaptation? Can any other evolutionary mechanism lead to adaptation? Be sure to elaborate on your answers.
3. In a hypothetical population of 100 frogs there exists a gene with two alleles, D and d. 28 of the frogs are homozygous dominant (DD), and 22 are homozygous recessive (dd). What is the frequency of heterozygotes in the population? What are the allele frequencies? How would the allele frequencies be different in the next generation if no homozygous individuals were able to reproduce?
Explanation / Answer
1) Reasons why the mutation in a single gene is difficult to detect :
2) Natural selection the most likely evolutionary mechanism to lead to adaptation:
Mechanism for evolution is natural selection, which occurs when populations of organisms are subjected to the
environment.The fittest creatures are more likely to survive and pass their genes to their offspring,producing a population that is better adapted to the environment.
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