Word: sperm
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...Hamburg would not produce offspring. The reason for this sterility, he determined, was a difference in the cytoplasm (the protoplasm surrounding the cell nucleus) between the Paris and Hamburg strains of mosquitoes. Because of this difference, the egg cells of the females of one strain could not accept the sperm cells from males of the other strain, causing the female to lay infertile eggs. This Franco-German incompatibility was not unique. In succeeding years, Laven discovered 19 additional strains of common mosquitoes that could not produce offspring when mated with other strains...
Even if the less virile Okpo males later had a chance to mate with these females, Laven explains, the female would produce no offspring: although the female mosquito can lay three or four sets of eggs during her two-week lifetime, she draws only on the first sperm she receives to fertilize all her eggs. Thus, after only a few generations of vigorous activity by the males from Fresno, there were no female mosquitoes left in Okpo that could lay fertile eggs. By May, Okpo was mosquito free...
...instruction even before kindergarten. This view is shared by Dr. Mary S. Calderone, executive director of the Sex Information and Education Council of the U.S. and a pioneer of sex education. At the age of three, she thinks, children should begin learning in simple, direct language about the sperm uniting with the egg in the uterus, carried there by the father's penis entering the mother's vagina. She has no patience with talk about the father's "placing" the seed in the mother. "This is a passive description and in fact is not what happens...
...1930s Hemingway was the celebrated author of The Sun Also Rises and A Farewell to Arms; he had a tough and masculine image to live up to. He harpooned a 50-ft. sperm whale off the coast of Cuba, and he also clumsily managed to shoot him self through both calves with a .22 Colt automatic. He was doing his writing at Key West in those days, and "to discourage visitors while he is at work your correspondent has hired an aged Negro who appears to be the victim of an odd disease resembling leprosy who meets visitors...
...Prize in 1946 for his 1927 experiments in which he bombarded fruit flies with X rays to produce weird mutations and demonstrated long before the atomic age the effects of radiation on genes, an outspoken scientist, most recently advocating the establishment of artificial insemination banks to store the frozen sperm of gifted men to improve the human race now and in the future; of heart disease; in Indianapolis...