Female Choice For Males With Competitive Sperm
Female factors can influence the result of sperm competition through a process known as "sperm choice". Proteins present in the female reproductive tract or on the surface of the ovum may influence which sperm succeeds in fertilizing the egg. During sperm choice females are able to discriminate and differentially use the sperm from different males. One instance where this is known to occur is inbreeding; females will preferentially use the sperm from a more distantly related male than a close relative.
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Famous quotes containing the words female, choice, males and/or competitive:
“In man, the shedding of blood is always associated with injury, disease, or death. Only the female half of humanity was seen to have the magical ability to bleed profusely and still rise phoenix-like each month from the gore.”
—Estelle R. Ramey (b. 1917)
“When there is a choice about it, a great sacrifice is preferable to a small sacrifice, because we compensate ourselves for a great one with self-admiration, which is not possible with a small one.”
—Friedrich Nietzsche (1844–1900)
“Three times a year all your males shall appear before the LORD your God at the place that he will choose: at the festival of unleavened bread, at the festival of weeks, and at the festival of booths. They shall not appear before the LORD empty-handed; all shall give as they are able, according to the blessing of the LORD your God that he has given you.”
—Bible: Hebrew, Deuteronomy 16:16,17.
“Developing the muscles of the soul demands no competitive spirit, no killer instinct, although it may erect pain barriers that the spiritual athlete must crash through.”
—Germaine Greer (b. 1939)