sex chromatin defined in 1951 yearsex chromatin - sex chromatin (barr body);
sex chromatin - Small heterochromatin body characteristic of some interphase nucleus of homogametic sex of some animals including human females. Derives from one of the two X chromosomes. Number of bodies is one less than number of X chromosomes. Particularly evident in cases of abnormalities amongst sex chromosomes, an XXX individual having two, an XXXX three.
near sex chromatin in Knolik
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