Sperm precedence
Sperm precedence, also known as sperm predominance, is tendency of a female who has been bred by multiple males to give birth to their offspring in unequal proportions. Sperm precedence is an important factor in the sperm competition.
Sperm precedence can be temporal, favoring either the first or last male to breed the female. ; or it can favor the male whose sperm are the most motile; or the male whose sperm were delivered closest to the female's ova.