Question

the collection of ____________ in a population constitutes that populations gene pool. genes chromosomes alleles genotypes phenotypes

Explanation:

A gene pool consists of all the alleles (different forms of a gene) present in a population. Genes are segments of DNA, chromosomes are structures containing DNA, genotypes are the genetic makeup of an individual, and phenotypes are the observable traits. The key concept here is that the gene pool is about the collection of alleles.

Answer:

C. alleles