If Two Genes Are Linked, Then the Frequency of Parental

Multiple Choice

If two genes are linked, then the frequency of parental ditype tetrads resulting from a two-point testcross will be

A) equal to the frequency of nonparental ditype tetrads.
B) equal to the frequency of the tetratype tetrads.
C) greater than the frequency of the nonparental ditype tetrads.
D) less than the frequency of tetratype tetrads.
E) none of the above.