Word: egges
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Given what researchers have learned since Dolly, no one thinks the mechanics of cloning are very hard: take a donor egg, suck out the nucleus, and hence the DNA, and fuse it with, say, a skin cell from the human being copied. Then, with the help of an electrical current, the reconstituted cell should begin growing into a genetic duplicate. "It's inevitable that someone will try and someone will succeed," predicts Delores Lamb, an infertility expert at Baylor University. The consensus among biotechnology specialists is that within a few years--some scientists believe a few months--the news will...
...human being," says West. "The miracle of cloning isn't what people think it is. Cloning allows you to make a genetically identical copy of an animal, yes, but in the eyes of a biologist, the real miracle is seeing a skin cell being put back into the egg cell, taking it back in time to when it was an undifferentiated cell, which then can turn into any cell in the body." Which means that new, pristine tissue could be grown in labs to replace damaged or diseased parts of the body. And since these replacement parts would be produced...
...ratio of mutations in males versus females is two to one. This may possibly be linked to the greater number of cell divisions involved in sperm formation versus egg formation...
...Massachusetts scientists injected a human nucleus into a cow egg. The resulting embryo, destroyed early, appeared to be producing human protein, but we have no idea what kind of grotesque hybrid entity would come out of such a marriage. Last October, the first primate containing genes from another species--a monkey with a jellyfish gene--was born. Monkeys today. Tomorrow humans...
...therein lies the theoretical debate at the center of the morning-after pill controversy. When does life begin? When the egg and sperm make contact, as many pro-life groups believe? Or when a fertilized egg is implanted in the uterus? Or some time after that...