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5 Written questions

5 Matching questions

  1. molecular clock
  2. speciation
  3. fossils
  4. species
  5. biogeography
  1. a the study of where organisms live now and where they and their ancestors lived in the past
  2. b the formation of a new species
  3. c preserved remains or traces of ancient organisms
  4. d a population or group of populations whose members can interbreed and produce fertile offspring
  5. e uses mutation rates in DNA to estimate the time that two species have been evolving independently

5 Multiple choice questions

  1. when individuals select mates based on heritable traits, such as size, strength, or coloration
  2. when allele frequencies change as a result of the migration of a small subgroup of a population
  3. traits that are controlled by two or more genes
  4. a trait controlled by only one gene
  5. form of reproductive isolation in which two populations are separated by geographic barriers such as rivers, mountains, or bodies of water, leading to the formation of two separate subspecies

5 True/False questions

  1. stabilizing selectionnature provides the variations, and humans select those they find useful


  2. directional selectionoccurs when individuals at one end of the curve have higher fitness than individuals in the middle or at the other end


  3. vestigial structuresinherited from ancestors but have lost much or all of their original function due to different selection pressures acting on the descendant


  4. temporal isolationform of reproductive isolation in which two populations develop differences in courtship rituals or other behaviors that prevent them from breeding


  5. genetic driftrandom change in allele frequency caused by a series of chance occurrences that cause an allele to become more or less common in a population