Post-Exam Review

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Across
  1. 5. nonliving components that influence the survival and fitness of species
  2. 7. the process by which new species arise
  3. 10. traits that have no apparent function and appear to be residual parts from a past ancestor
  4. 11. a population that experiences change in allelic frequency due to catastrophic events
Down
  1. 1. _______ selection refers to traits that are being selected for by humans, not nature
  2. 2. modifies allele frequencies by continually introducing new alleles
  3. 3. isolation that occurs because two species mate at different times
  4. 4. selection that increases the amount of variation in a trait
  5. 6. selection that changes the average value of a trait
  6. 7. selection that reduces the amount of variation in a trait
  7. 8. change in allelic frequencies over time
  8. 9. similarity due to shared ancestry between a pair of structures