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5 Written questions

5 Matching questions

  1. stabilizing selection
  2. geographic isolation
  3. ontogeny
  4. heritable variation
  5. allele frequency
  1. a the fraction of different forms of a given gene in all of the members of a population
  2. b when natural selection weeds out the extremes
  3. c when populations are prevented from mating due to rivers, oceans, mountains, continental drift, etc.
  4. d the steps of embryonic development of an organism
  5. e when members of a population have different traits that are passed on genetically to offspring

5 Multiple choice questions

  1. a change in the gene frequencies due to chance events
  2. preserved remains or traces of previously living organisms
  3. the environment creates selective pressures that influence which organisms survive and reproduce to pass on their own genes
  4. the history of organismal lineages as they change through time
  5. when natural selection favors the extremes

5 True/False questions

  1. mass extinctionthe process by which new types of organisms arise

          

  2. example of homologous structurethe wing of a bird and a person's arm

          

  3. speciationa change in the DNA sequence by changing, adding, or deleting one or a few nucleotides

          

  4. gene shufflingthe recombination of different genes within the genome

          

  5. struggle for survivalthe fraction of different forms of a given gene in all of the members of a population

          

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