read each example and identify it with one of the mechanisms that influence gene pools. a zebra migrates to…

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 animals. done

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 animals. done

Answer

Brief Explanations:

  1. When a zebra migrates to join a different herd, it is gene - flow as it involves the movement of an individual and its genes between populations.
  2. Competition for sunlight leading to taller trees is natural selection. Traits (taller height) that give an advantage in obtaining resources are selected for.
  3. The change in a snake's DNA to make its venom stronger is a mutation, which is a change in the genetic material.
  4. A grass - fire randomly killing most of the buffalo population is genetic drift, specifically a bottleneck effect, as it is a random event that drastically reduces the population size and changes the gene pool.

Answer:

  1. Gene - flow
  2. Natural selection
  3. Mutation
  4. Genetic drift (bottleneck effect)