When individuals at one end of the curve have higher fitness than individuals in the middle or at the other end
when individuals near the center of the curve have higher fitness than individuals at either end
when individuals at the outer ends of the curve have higher fitness than individuals near the middle of the curve.
random change in allele frequency
is a change in allele frequency following a dramatic reduction in the size of the population
allele frequencies change as a result of the migration of a small subgroup of a population
if a population is not evolving, allele frequencies in its gene pool do no change
states that allele frequencies in a population should remain constant unless one or more factors cause those frequencies to change
individuals select mates based on heritable traits, such as size, strength, or coloration.