Humans possess two alleles, or variations, for each gene. The alleles may be the same, or they may be different.
When humans reproduce, their alleles are separated and independently sorted into different gametes, or sex cells. So, when sex cells randomly combine during fertilization to produce offspring, there is
A.
a low probability of survival.
B.
a decreased risk of mutation.
C.
a high probability of producing a clone.
D.
an increase in genetic variation.