NEET BIOLOGY

Detailed explanation-1: -Complete answer: Gene pool is the sum of a population’s genetic material at a particular time. The term typically is used for a population of individuals of the same species that include all genes and combinations of genes (sum of the alleles) in the population.

Detailed explanation-2: -The gene pool is the set of all genes, or genetic information, in any population, usually of a particular species. This also proves to be the basic level at which evolution occurs.

Detailed explanation-3: -A gene pool is a collection of all available genes and their alleles in a population (unit of evolution).

Detailed explanation-4: -A gene pool is the collection of different genes within an interbreeding population. The gene pool usually refers to the sum of all the alleles at all of the loci within the genes of a population of a single species. So correct option is A, gene pool.