Question

is quite in sub - saharan africa. conversely, malaria is nonexistent in eastern europe. residents in sub - saharan africa have genes that provide resistance to malaria, whereas residents in eastern europe do not possess this gene.
if a small population of people from sub - saharan africa move to eastern europe, which term would best describe this movement?
gene mutation
gene flow
genetic drift
there is no term for this process.

Explanation:

• Gene mutation: A change in the DNA sequence. This is not about a population moving, so it's incorrect.
• Gene flow: The transfer of genetic material from one population to another. Here, people (and their genes) are moving from sub - Saharan Africa (where a malaria - resistance gene is present) to eastern Europe (where it was absent). This fits the definition of gene flow.
• Genetic drift: Random changes in allele frequencies in a population, often due to chance events like a small group being isolated. This is about movement of genes between populations, not random chance within a population, so it's incorrect.
• “There is no term...”: Gene flow is a valid term for this process.

Answer:

gene flow