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

The correct answer would be a. the sum of all genetic traits in a population’s individuals at a given time.

A gene pool is defined as a sum total of all the genes present in an inter-breeding population at a specific time.

It includes all the alleles of all the loci within the genes of a interbreeding population or species.

The composition of the gene pool of a population can change with course of a time due to evolution.

A large and diverse gene pool enhances the ability of a population to adapt, survive and evolve in a nature.

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.

meiosis is the correct answer