read each example and decide what the resulting effect on the gene pool of that population would be. a zebra…

read each example and decide what the resulting effect on the gene pool of that population would be. 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 decide what the resulting effect on the gene pool of that population would be. 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, gene - flow occurs as it can introduce new alleles to the new herd's gene pool.
  2. Competition for sunlight leading to taller trees is natural selection. Traits that help in getting sunlight (taller height) are selected for, altering allele frequencies in the gene pool over time.
  3. A change in a snake's DNA to make its venom stronger is a mutation. Mutations create new genetic variation in the gene pool.
  4. A grass - fire randomly killing most of the buffalo population is genetic drift (specifically a bottleneck effect). It reduces the size of the gene pool and changes allele frequencies randomly.

Answer:

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