Read each example and identify it with one of the mechanisms that influence gene pools.

1. A zebra migrates to join a different herd of zebras.
2. Competition for sunlight leads to taller trees.
3. The DNA of a snake changes to make its venom stronger.
4. A grassfire randomly sweeps through a population of buffalo and kills most of the animals.

The introduction of new genes from the same species into a population has an impact on its gene pool. Therefore, option A is correct.

What is gene pool?

The total number of genes in a population's various species is the gene pool. The introduction of a new gene from the same species in distinct populations, as in immigration, or the eradication of a gene from the population, as in emigration, can both alter the gene pool.

The competition of sunlight has been the form of mechanism that influences the mutation in the genes. The change in the snake DNA and the killing of buffalo population with the grassfire can form the change in the gene, but not the gene pool.

As a result, when a zebra migrates to a new herd of zebras, new genes are introduced into the population, which is an example of how gene pools are impacted. Therefore, option A is correct.

Learn more about the gene pool, here:

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