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1. A biological father.
a. The male parent of an animal, especially a domesticated mammal.
b. The plant or gamete responsible for fertilizing an ovule that develops into a seed.
tr.v. sired, siring, sires
1. To be the biological father of (a child).
2. To be the male individual or gamete producing (an animal's offspring or a plant's seed) through sexual reproduction: the boar that sired the litter; pollen grains siring seeds.
one that has been proven to have good fertility.
in farm animals, the estimation of the breeding value of a male by progeny testing.
the average performance of the half-sib family of which the individual is a member.
characteristics contributed to the offspring of a cross mating by the sire.
verifying that a stated sire is indeed a parent by the use of a paternity testing technique.