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:
““Reason” in language: oh, what a fraudulent old female she is! I am afraid that we have not eliminated God because we still believe in grammar.”
—Friedrich Nietzsche (1844–1900)
“People are capable of doing an awful lot when they have no choice and I had no choice. Courage is when you have choices.”
—Terry Anderson, U.S. hostage. International Herald Tribune (Paris, May 6, 1992)
“If combat means living in a ditch, females have biological problems staying in a ditch for 30 days because they get infections.... Males are biologically driven to go out and hunt giraffes.”
—Newt Gingrich (b. 1943)
“Women of my age in America are at the mercy of two powerful and antagonistic traditions. The first is the ultradomestic fifties with its powerful cult of motherhood; the other is the strident feminism of the seventies with its attempt to clone the male competitive model.... Only in America are these ideologies pushed to extremes.”
—Sylvia Ann Hewitt (20th century)