Word: nonsexes
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Dates: during 1960-1969
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Which chromosome, they did not say. A normal woman has 22 pairs of nonsex chromosomes, like a man, plus two x chromosomes to determine femaleness. A normal man has one x, but his y chromosome is decisive and establishes maleness. A fairly common case of "one chromosome too many" is an xxy combination, but this is accompanied by external male genitalia and poor, nonathletic physical development. More probably, Ewa is a mosaic, with some xyy cells, and others containing a single x and nothing else...
...effects on patients, but totally different in inheritance and incidence is von Willebrand's disease. This is the most common of a group of clotting disorders that are transmitted by genes on some other chromosome than the x-which chromosome, remains a mystery. But it is a nonsex chromosome, so boys and girls are equally likely to inherit the defective gene...
...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...