Question

Suppose that allele A has a frequency of 0.2 in population X and 0.8 in population Y. After a single generation of gene flow between these populations, the frequency of A in population X is 0.4. What proportion of gametes (m) entered population X from population Y to explain this result?

Answer 1

Population - a group of organisms of the same species found in the same area that can interbreed

Allele frequency - frequency of a particular allele that appears in a population

Population genetics - the field of biology that studies allele frequencies in populations and how they change over time

p'x = (1 − m)px + mpy

0.4 = (1 − m)*0.2 + m*0.8

m = 0.2