Biotechnology

Biotechnology - , which involves collecting and introducing...

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Biotechnology Recent decades have produced dramatic—though controversial—scientific advances in  biotechnology  (the application of technology to the practice of medicine). Advances in such areas  as reproductive technologies, surrogate parenthood, sex preselection, and genetic engineering have  raised difficult political, ethical, and moral questions.  Reproductive technologies and sex preselection Not every couple wanting to conceive can do so. If they fail to conceive after one year or more of  trying, the couple is considered infertile. At any one time, up to 20 percent of couples in the United  States may be infertile. In many cases, doctors can successfully treat infertility:  Fertility drugs  (ovulation-stimulating hormones) can help when the woman's inability  to ovulate causes the infertility.  Artificial insemination
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Unformatted text preview: , which involves collecting and introducing sperm into the vagina using a syringe, proves particularly useful when the man possesses a below-normal sperm count. In vitro fertilization , or the test-tube baby method, involves fertilizing an egg outside the woman's body and implanting it into the uterus. This procedure is useful when the woman has blocked fallopian tubes. Gamete intrafallopian transfer (GIFT) involves taking eggs from the woman's ovaries, mixing them with the man's sperm, and then inserting them into the fallopian tube. In this procedure, fertilization takes place inside the woman's body rather than outside. To date, couples in the United States have produced over 20,000 babies using alternatives such as these....
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