students make claims about the genetic variation of barn swallows living in the exclusion zone after a…

students make claims about the genetic variation of barn swallows living in the exclusion zone after a nuclear incident. which student claims are supported by the evidence presented? select the two that apply. hide all a the genetic variation of the barn swallows decreased over time because barn swallow reproduction decreased. b the dna of barn swallows migrating into the population from uncontaminated areas is not affected by radiation. c most physical irregularities in barn swallows are inheritable and do not prevent the survival and reproduction of affected individuals. d barn swallow offspring have different physical irregularities from parents because viable errors during dna replication are passed on. e physical irregularities are passed from parent to offspring in the barn swallow population because dna mutations are caused by radiation.

students make claims about the genetic variation of barn swallows living in the exclusion zone after a nuclear incident. which student claims are supported by the evidence presented? select the two that apply. hide all a the genetic variation of the barn swallows decreased over time because barn swallow reproduction decreased. b the dna of barn swallows migrating into the population from uncontaminated areas is not affected by radiation. c most physical irregularities in barn swallows are inheritable and do not prevent the survival and reproduction of affected individuals. d barn swallow offspring have different physical irregularities from parents because viable errors during dna replication are passed on. e physical irregularities are passed from parent to offspring in the barn swallow population because dna mutations are caused by radiation.

Answer

Brief Explanations:

  • Option A: Reduced reproduction can lead to decreased genetic variation over time as there are fewer new genetic combinations.
  • Option D: Viable errors in DNA replication can cause offspring to have different physical irregularities from parents, which is a source of genetic variation.
  • Option B: There is no evidence given about the DNA of migrating barn - swallows not being affected by radiation.
  • Option C: There is no information provided to support that most physical irregularities are inheritable and do not prevent survival and reproduction.
  • Option E: While radiation can cause DNA mutations, there is no evidence presented to specifically link the passing of physical irregularities from parent to offspring in this way.

Answer:

A. The genetic variation of the barn swallows decreased over time because barn swallow reproduction decreased. D. Barn swallow offspring have different physical irregularities from parents because viable errors during DNA replication are passed on.