Word: nonsexes
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...normal human's 46 chromosomes are classified as 22 pairs of autosomes (nonsex chromosomes), one of each pair being derived from the father and one from the mother, and two gonosomes (sex chromosomes). In a woman, the gonosomes are both Xs, one each from father and mother; in a man, they are an X from mother and a Y from father. Among the autosomes, the two members of each pair behave alike. But the Ohno team showed that a woman's two Xs behave quite differently (except in her egg cells). One acts like an autosome...