One can match his race or ethnicity and even select a sex, but beyond that he takes his chances. I am persuaded that if only heterosexual families can clone, and if we sharply limit the sources of the embryo they can implant in the woman, cloning will be quite rare. Sex is more fun than cloning, and artificial insemination and in vitro fertilization preserve the element of genetic chance that most people, I think, favor. Dr. Kass is right to stress the mystery and uncertainty of sexual union. That is why hardly any woman with a fertile husband who could obtain a sperm from a donor bank will do so.
Procreation is a delight.
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