Question

which of these is a feature of both evolution and natural selection?
○ the change in allele frequencies over time in a population
○ differential survival
○ the differential survival of individuals in response to environmental pressure
○ the change in allele frequencies over time in individuals

Explanation:

Evolution is defined as changes in allele frequencies in a population over generations. Natural selection is a mechanism of evolution that causes such changes by favoring traits (and their alleles) that enhance survival/reproduction, leading to shifts in allele frequencies. Differential survival (options B/C) is specific to natural selection, not evolution broadly. Allele frequency changes occur at the population level, not individual (option D). Thus, the shared feature is option A.

Answer:

A. the change in allele frequencies over time in a population