Answer:
A .They result in sudden gene frequency changes.
Explanation:
You have not given the concept map. But I think it might be this one. So, according to this concept map, the answer should be B. H2O and CO2
If B and b are the two alleles , B + b = 1 and B ^2 +2 Bb + b ^2 = 1.
If 16% of mice are homozygous black , B ^ 2 =0 .16, meaning B = 0 .4 and b = 1 - 0. 4 = 0 .6 .
Answer = Notice how you don't even need to know that 24% of the mice are heterozygous .