A recessive lethal allele is currently at a frequency of 010

A recessive lethal allele is currently at a frequency of 0.10 in a randomly mating population. What is the expected frequency of this allele after one generation of natural selection?

Solution

Answer:

Recessive lethal allele frequency, q= 0.10

                                              so, p= 0.90

   According to hardy weinberg p2+2pq+q2

                                      p2 = 0.90 x 0.90 = 0.81=   81%

                                    2pq = 2 x 0.10 x0.90 = 0.18 = 18%

                                    q2 = 0.10 x 0.10   = 0.01 = 1%

   As q2 is lethal, so 1% individual dies in next generation