Question

Consider a gene which is found in two forms in a population: D and D, with frequencies of 0.6 and 0.4, respectively. the d allele can mutate into the d allele at a rate of 0.00001 mutations per gene per generation. what would the expected frequency of the d allele be after one generation? (assume that the reverse mutation from d to D does not occur.) multiple choice question.

a. 0.399994
b. 0.50000
c. 0.400666
d. 0.400006
e. 0.36662

Answer 1

The expected frequency of the d allele after one generation is 0.400006, considering a mutation rate of 0.00001 per gene per generation from D to d, with no reverse mutation occurring.

Step-by-step explanation:

Given a gene that exists in two forms, D and d, with initial frequencies of 0.6 and 0.4 respectively, we can calculate the expected frequency of the d allele after one generation considering a mutation rate from D to d of 0.00001. To do this, we account for the initial d allele frequency and add the new d alleles generated by mutation from the D allele:

Frequency of d after mutation = (initial frequency of d) + (frequency of D x mutation rate)
= 0.4 + (0.6 x 0.00001)
= 0.4 + 0.000006
= 0.400006

Therefore, the expected frequency of the d allele after one generation is 0.400006. We can ignore the reverse mutation for this calculation since it's stated that it does not occur. So, the correct choice is d. 0.400006.