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Artificial Insemination
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| Term Paper Title | Artificial Insemination |
| # of Words | 500 |
| # of Pages (250 words per page double spaced) | 2 |
Artificial insemination
Artificial insemination is the injection of SEMEN into the vagina by instrumental means. The first artificial inseminations of viviparous (live-bearing) animals were performed by the 18th-century Italian physiologist Lazzaro Spallanzani, who proved that the male contribution to reproduction resided in the semen, although he did not recognize spermatozoa as the fertilizing agents. Pioneering work in the artificial insemination of dairy and beef animals was done in Russia about the time of the Revolutions of 1917. By the 1930s it was being practiced throughout Europe and the United States. The principal advantage of artificial insemination over natural breeding is that a single male of superior genetic quality can be used to impregnate thousands of females, thereby improving herds and increasing dairy and meat production. With artificial insemination, dairy farmers need not risk the deterioration of their herds from excessive inbreeding, nor incur the expense of maintaining their own bulls. In humans, artificial insemination is used to achieve pregnancy when an anatomical impediment prevents direct fertilization. When the male is sterile, semen is collected from an anonymous donor who is known by the physician to have a family history free of genetic disease. The same precautions are taken when, as in recent years, artificial insemination has been used as a means of providing a child to a couple where the woman cannot conceive. In such cases the husband's sperm is used to fertilize a SURROGATE MOTHER, who has volunteered to bear the child, usually for a fee, and to give ...This is not the end of the termpaper! Register below to see the complete version of this term paper.
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