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

The sum of all genetic traits in a population’s individuals at a given time

Explanation:

The gene pool can be defined as the sum of all genetic traits in a population’s individuals at a given time. This term is used when we talk about genes found in a population of any species. It doesn't matter if we talk about us, humans, or, for example, certain species of ants, trees, or algae.

When it comes to the survival of a species, it's better if it has a larger gene pool. If a genetic pool is large, there is a lot of diversity and the population of a species has better chances of surviving environmental stress that may impact it.

A) the sum of all genetic traits in a population's individuals at a given time

Explanation:

Edge2021 ^_^

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."