Preimplantation genetic diagnosis is a new method of prenatal diagnosis that is developing from a union of in vitro fertilization technology and molecular biology. Briefly stated, PGD involves the creation of several embryos in vitro from the eggs and sperm of an interested couple. The embryos are permitted to develop to a 6-to-10-cell stage, at which point one of the embryonic cells is removed from each embryo and the cellular DNA is analyzed for chromosomal abnormalities or genetic mutations. An embryo (...) or several embryos found to be free of genetic abnormalities are subsequently transferred to the woman's uterus for gestation. Embryos found to carry a genetic abnormality are discarded or frozen. Extra normal embryos may be frozen for future transfer or donation to another couple. (shrink)

An increase in autonomy and freedom is often considered one ofthe main arguments in favour of a broad use of genetic testing.Starting from Gerald Dworkin's reflections on autonomy and choicethis article examines some of the implications which accompanythe increase in choices offered by prenatal genetic diagnosis.Although personal autonomy and individual choice are importantaspects in the legitimation of prenatal genetic diagnosis, itseems clear that an increase in choice offered by prenatalgenetic diagnosis also leads to various implications that maynegatively influence the freedom (...) of the persons involved. (shrink)