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