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.
an increase in genetic variation.
C.
a high probability of producing a clone.
D.
a decreased risk of mutation.