Geneticists make new discovery about how a baby's sex is determined -- ScienceDaily - Fetal sex determined
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Sexual differentiation in humans is the process of development of sex differences in humans. The sex of an early embryo cannot be determined because the reproductive structures do not differentiate until the seventh week. Prior to this, the. Although sonographic fetal sex determination is feasible in most pregnancies, in some cases, it may pose difficulties. An attempt to determine the fetal sex.