Evolution as a Genetic Change

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Across
  1. 5. A random change in allele frequencies which occurs in small populations.
  2. 7. Occurs when individuals at one end of the curve have higher fitness than individuals in the middle or at the other end of the curve.
  3. 9. Occurs when individuals at either end of the curve have a higher fitness than individuals at the center of the curve; can result in the creation of two distinct phenotypes.
Down
  1. 1. ensures that all members of the populations have an equal chance to pass on their alleles.
  2. 2. The situation in which allele frequencies remain constant.
  3. 3. Occurs when individuals at the center of the curve have a higher fitness than individuals at either end of the curve.
  4. 4. Allele frequencies in a population will remain constant, unless one or more factors cause those frequencies to change.
  5. 6. Allele frequencies change as a result of the migration of a small subgroup of a population.
  6. 8. Genetic drift has less of an effect on _______.