Question

which of the following best defines gene flow? the sum of all genetic traits in a population’s individuals at a given time any movement of genes from one population to another any movement of organisms from one environment to another the random change in the frequency of an allele in a population

Explanation:

• The first option defines the gene pool (sum of all genetic traits in a population), not gene flow.
• The second option: Gene flow is specifically the transfer of genetic material (genes) between populations, so this matches the definition.
• The third option is about organism movement (like migration of organisms, not gene transfer between populations), so it's incorrect.
• The fourth option defines genetic drift (random change in allele frequency), not gene flow.

Answer:

B. any movement of genes from one population to another