Question

Gene flow is when...
Select an answer

A.
random changes in the DNA causes new traits to form.


B.
an organism migrates to a new population and their genes mix.


C.
new combinations of genes form through sexual reproduction.

Answer 1

B. an organism migrates to a new population and their genes mix.

Explanation: Gene flow is the transfer of alleles between populations when individuals (or their gametes, e.g., pollen) move and breed, changing allele frequencies. Option A describes mutation; option C describes genetic recombination from sexual reproduction.