Question

In pea plants, purple flower color, C, is dominant to white flower color, c. The table shows the frequencies of the dominant and recessive alleles in three generations of peas in a garden. Which generation showed the greatest frequency of having one of each allele?

Answer 1

Answer:

Generation 1

Explanation:

Considering the following frequency table:

Generation     f(p)          f(q)

       1              0.6           0.4

       2             0.7            0.3

       3             0.8            0.2

Then, the genotipic frequencies in each generation is:

Generation     f(p)      p²         f(q)      q²      2pq     p² + q² + 2pq= 1

       1              0.6       0.36      0.4    0.16     0.48    0.36 + 0.16 + 0.48 =1

       2             0.7       0.49      0.3     0.09   0.42     0.49 +  0.09 +0.42 = 1    

       3             0.8       0.64      0.2     0.04   0.32     0.64 + 0.04 + 0.32  1