試題詳解

15. A fruit fy population has a gene with two alleles, AI and A2. Tests show that 70% of the gametes produced in the population contain the A1 allele. If the population is in Hardy-Weinberg equilibrium, what proportion of the flies carry both Al and A2?
(A) 0.7
(B) 0.49
(C) 0.42
(D)0.21
(E) 0.09