The Hardy-Weinberg rule is (Multiple Choice)

The Hardy-Weinberg rule is
  a. useful in determining the extent to which a
  sexually reproducing population is
  evolving.
  b. used to predict when genetic drift will
  occur in a sexually reproducing population.
  c. useful in determining the extent to which
  polyploidy is occurring in specific plant
  populations.
  d. used to predict when specific groups of
  organisms will become extinct.
  e. all of these.

Question 2

Genetic equilibrium and allele frequencies are
  maintained by all EXCEPT which one of the
  following?
  a. lack of gene flow
  b. large population interbreeding freely
  c. differential survival and reproduction
  d. random mating
  e. absence of mutations