A population of lizards shows variation in tail length. The
individuals with longer tails are eaten by predators because they
are easier to catch so over time the population evolves shorter
tails. This is an example of what type of selection?
catastrophic selection, disruptive selection, stabilizing
selection, directional selection
The frequency of the dominant allele in a population (p) is .6,
what is the frequency of individuals with a homozygous dominant
genotype?
Two populations of birds mate at different times of the year.
This is an example of which prezygotic barrier?
mechanical isolation
habitat isolation
behavioral isolation
Which of the following would be an example of sympatric
speciation?
Two species of birds that evolve after a valley forms between
them
Two species of lobsters evolve after an island form and
separates them
Two species of fish that evolve to feed on different food
sources
Two species of trees that evolve after a river forms between
them