From Longman Dictionary of Contemporary Englishgene poolˈgene pool noun [countable] HBall of the genes available to a particular species
Examples from the Corpus
gene pool• Because the gene pool for a growing breed is slight, munchkins are generally bred with other cats.• People have to be executed, removed from the gene pool.• The genes themselves don't evolve, they merely survive or fail to survive in the gene pool.• In the long term, the loss of genetic diversity will reduce the gene pool available for agricultural crops.• A plague of uniformity is sweeping the world, numbing the taste buds and reducing the gene pool.• The gene pool of the resulting subgroups would be too small to ensure the viability of the population.• The net result was a widening gene pool and an altogether hardier national herd. 