chapter 17 vocab

12345678910111213141516171819
Across
  1. 3. a trait controlled by only one trait
  2. 4. controlled by two or more genes
  3. 6. allele frequencies change as a result of the migration of a small subgroup of population
  4. 7. random change in allele frequency
  5. 8. when individuals at one end of the curve have higher fitness than individuals at the middle or other end
  6. 9. when a population gets split by a geographic barrier
  7. 10. estimate the time that two species have been evolving independently
  8. 11. once a population has split, changes in one group will not effect the other
  9. 12. same species, but different behaviors like in courtship rituals
  10. 13. allele frequencies in its gene pool do not change
  11. 14. when two or more species reproduce at different times
  12. 15. individuals at the two ends are higher than the middle
  13. 18. number of times an allele occurs in a gene pool
  14. 19. consists of all genes
Down
  1. 1. change in allele frequency following a dramatic reduction in the size of the population
  2. 2. population whose members can interbreed to produce fertile offspring
  3. 3. individuals at the middle of the curve have higher fitness than ones at the ends
  4. 5. allele frequencies should remain constant unless factors cause it to change
  5. 16. individuals in a species select mates based on heritable traits
  6. 17. formation of a new species