It is because of the nutrients that comes from each other. They been able to fertilize because of the hormones of each other.
Puberty.
sperm doesnt expire it just helps if you use a condom so that when you decide to have sex you dont have the sperm inside you trying to fertilize your eggs .
Puberty.
As long as he produces the active male gamete cell (sperm) and physically make it possible for the sperm to reach the ovary and fertilize the ova in the female.
Male live beareres have a modified anal fin, called a gonopodium. The gonopodium is inserted into the female, and sperm are transferred into her, where they are then able to fertilize the females eggs.
A sperm don't need 70 days to to be able to fertilize an egg. Sperms are being made all the time and they are always ready to fertilize. When you ejaculate they are ready. So yes.
capacitation. Capacitation is a series of biochemical changes that sperm go through in the female reproductive tract. It involves removing certain coatings from the sperm head and increasing the sperm's ability to swim and penetrate the egg. Once capacitated, the sperm is able to fertilize the egg and initiate the process of conception.
I am not sure. But i think you can. But your sperm aren't active. Which means they are not able to fertilize an egg.
The Ovalry Releases an egg and and the sperm travels through the fallopian tube to meet the egg.When They Meet they form A Zygote then it develops into an Infant
If sperm were to be put in a sperm bank the average life span of a sperm once ejaculated is 4 days however in some cases sperm has survived 6 days and was still able to fertilize an egg.
it is important for 1 sprem to fertilize a human egg (Ova) in order to start the conception process. If 2 sprem Cells fertilize the 2 DIFFERENT Ova the mother will have "Fraternal Twins". However, if 2 sperm cells fertilize the SAME Ova (egg) the mother will have "Identical Twins". I hope that is the answer you were looking for?
In humans the sex of the offspring is determined by which sperm is able to fertilize the ovum. If a sperm containing the X chromosome fertilizes the ovum, a female offspring results. If a sperm containing the Y chromosome fertilizes the ovum, a male offspring results