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Sperm storage organs in the fruit fly Drosophila melanogaster.Female was first mated with GFP-male and then re-mated with RFP-male. Female sperm storage is a biological process and often a type of sexual selection in which sperm cells transferred to a female during mating are temporarily retained within a specific part of the reproductive tract before the oocyte, or egg, is fertilized.
A breeding mount with built-in artificial vagina used to collect semen from horses for use in artificial insemination. Semen collection refers to the process of obtaining semen from human males or other animals with the use of various methods, for the purposes of artificial insemination, or medical study (usually in fertility clinics).
Thus, a female's cells will remain in the male's testicles long enough to be converted into sperm. However, there are more serious challenges. Biologists have well established that male sperm production relies on certain genes on the Y chromosome, which, when missing or defective, lead to such males producing little to no sperm in their ...
“Donating sperm makes me feel good. Maybe it makes me feel wanted, and needed. Worth something to somebody else,” says Stefan, one of the subjects of “Spermworld,” the new FX on Hulu ...
The sperm and the ovum are known as the gametes (each containing half the genetic information of the parent, created through meiosis). [citation needed] The sperm (being one of approximately 250 million sperm in a typical ejaculation) travels through the vagina and cervix into the uterus or fallopian tubes. Only 1 in 14 million of the ...
A mating plug in a female Richardson's ground squirrel (Urocitellus richardsonii). A mating plug, also known as a copulation plug, [1] vaginal plug, [2] sperm plug, or sphragis (Latin, from Ancient Greek: σφραγίς sphragis, "a seal"), is a gelatinous secretion used in the mating of some species.
Cryptic female choice is a form of mate choice which occurs both in pre- and post-copulatory circumstances in which females of certain species use physical or chemical mechanisms to control a male's success of fertilizing their ova or ovum; i.e. by selecting whether sperm are successful in fertilizing their eggs or not.
There are many misconceptions about orgasms, and more than one of them have to do with squirting. For one thing, there’s the myth that every single climax ends in a literal stream of erotic bliss.