Did the moth population you fed on evolve In other words was

Did the moth population you fed on evolve? In other words, was there a change in the frequencies of the alleles for wing color over three generations? Instructions Using the data you generated as a bird (shown in Table 1) fill in Table 2 with allele frequencies for: the starting population the surviving population in Generations 1, 2 and 3 Don\'t know how to calculate allele frequencies? Use the Help feature.

Solution

To calculate allele frequency of particular generation we use following formula:

Number of progenies containing allele/ total progenies

For two alleles if we know frequency of one allele, we can calculate the frequency of second allele by Hardy Weinberg rule: p+q =1 where p and q are frequencies of two alleles.

For generation 1 where AA =10, Aa = 10 and aa =30

Allelic frequency of A = (AA+Aa)/ (AA+Aa+aa) = [10+10] / [10+10+30] =20/50 = 0.4

Allelic frequency of a= 1-0.4 [according the equation: p+q =1] = 0.6

Also for survivor of generation, 1 has allelic frequencies: we can calculate by using the same formula as above.

Allelic frequency of A = (AA+Aa)/ (AA+Aa+aa) = [10+10] / [10+10+15] =20/35 = 0.57

Allelic frequency of a= 1-0.57= 0.43

Apply the same rule for all generations of question.