Question

identifying examples of the mechanisms that influence gene pools
read each example and identify it with one of the mechanisms that influence gene pools.
a zebra migrates to join a different herd of zebras.
competition for sunlight leads to taller trees.
the dna of a snake changes to make its venom stronger.
a grassfire randomly sweeps through a population of buffalo and kills most of the

Explanation:

• For "A zebra migrates to join a different herd of zebras": Gene flow is the transfer of genetic material from one population to another. Migration of the zebra to a different herd is an example of gene flow.
• For "Competition for sunlight leads to taller trees": Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring. Taller trees have an advantage in getting sunlight (a resource), so this is natural selection.
• For "The DNA of a snake changes to make its venom stronger": Mutation is a change in the DNA sequence. The change in the snake's DNA is a mutation.
• For "A grassfire randomly sweeps through a population of buffalo and kills most of the": Genetic drift is a change in the frequency of an allele in a population due to random sampling of organisms. The grass - fire randomly killing most of the buffalo is an example of genetic drift (a random event affecting the population).

Answer:

1. Gene flow
2. Natural selection
3. Mutation
4. Genetic drift