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View synonyms for sex chromatin

sex chromatin

noun

Genetics.

  1. Barr body.

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Word History and Origins

Origin of sex chromatin1

First recorded in 1950–55
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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

All human cells, says Dr. Murray L. Barr of the University of Western Ontario, contain something called sex chromatin.

The cells were then examined for the presence of sex chromatin, a substance found only in female cells.

Later research showed that the spots, now known as "Barr bodies" or sex chromatin, consisted of one X chromosome � the one that is inactivated after it has done its job of helping to determine femaleness.

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