Environmental factors can influence natural selection because they can increase or decrease
A. the number of chromosomes in an individual.
B. the number of chromosomes in a population.
C. the amount of genetic variation in an individual.
D. the amount of genetic variation in a population.

Environmental factors influence natural selection by affecting the amount of genetic variation in a population, which can increase or decrease due to changes in environmental pressures. These changes may enhance certain traits while reducing overall diversity. Therefore, while chromosomal numbers remain constant, genetic variation is crucial for survival and adaptability. ;

Answered by GinnyAnswer | 2025-07-08

Environmental factors influence natural selection by affecting the amount of genetic variation within a population. Increased or decreased genetic diversity can result from changes in environmental conditions, impacting survival and reproduction. Therefore, the correct answer is D: the amount of genetic variation in a population.
;

Answered by Anonymous | 2025-07-27