Unit 9 Crossword

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Across
  1. 4. selection occurs when individuals at the upper and lower ends of the curve have higher fitness than individuals near the middle
  2. 8. This group of primates includes hominoids and hominines, as well as old world and new world monkeys.
  3. 9. ___________ ___________ acts directly on an organism's phenotype.
Down
  1. 1. The type of genetic drift that follows the colonization of a new habitat by a small group of individuals is called...
  2. 2. The process of change over time is called
  3. 3. selection occurs when individuals at one end of the curve have higher fitness than individuals in the middle or at the other end.
  4. 5. occurs when individuals near the center of the curve have higher fitness than individuals at either end.
  5. 6. This is a random change in allele frequency that occurs in small populations by chance.
  6. 7. Suggested that organisms could change during their lifetimes by selectively using or not using various parts of their bodies.
  7. 8. The number of times a particular allele occurs in a gene pool, compared with the number of times other alleles for the same gene occur.