chromatin (redirected from Chromatin structure)

chromatin /chro·ma·tin/ (kro´mah-tin) the substance of chromosomes, the portion of the cell nucleus that stains with basic dyes. See euchromatin and heterochromatin.

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sex chromatin  Barr body; the persistent mass of the inactivated X chromosome in cells of normal females.

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chro·ma·tin (krm-tn)

n.

A complex of nucleic acids and proteins in the cell nucleus that stains readily with basic dyes and condenses to form chromosomes during cell division.

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chromatin (krō´mtin),

n the genetic material present in the nucleus, consisting of DNA and associated proteins, seen as irregular clumps in quiescent cells.

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chromatin

the substance of the chromosomes, composed of nucleic acids and basic proteins (histones), the material in the nucleus that stains with basic dyes.

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sex chromatin

Barr body; the persistent mass of the material of the inactivated X chromosome in cells of normal females. See also drumstick.

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chromatin Genetics The stainable material of interphase nuclei corresponding to chromosomes; chromatin consists of nucleic acids–DNA and associated histone protein, which are packed into nucleosomes; euchromatin is loosely packed and accessible to RNA polymerases. See Salt & pepper chromatin. Cf Heterochromatin.