Question

Two populations of the same species of fish have been isolated in different lakes for hundreds of years. During a flood event, a permanent stream forms between the two lakes, allowing fish to move back and forth. How will this affect allele frequencies in the two populations?

Answer 1

Answer: The Allele frequencies in the fish population will become more similar over time.

Explanation: The Allele frequency also known as the gene frequency, is the relative frequency of an allele (which is a variant of a gene) at a particular section in a population, normally expressed as a fraction or percentage.

To be more precise , it is the fraction of all chromosomes in the population that carry that gene.

If during a flood event a permanent stream forms between two lakes allowing fishes to move back and forth, it would cause the allele frequencies in the fish population to become more similar.