Medical Definition of Facultative heterochromatin

1. The heterochromatin which is condensed in some cells and not in others, presumably representing stable differences in the activity of genes in different cells. The best known example results from the random inactivation of one of the pair of X chromosomes in the cells of female mammals, (Lyonisation). This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)



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Lexicographical Neighbors of Facultative Heterochromatin

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factualnesses
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facultative anaerobe
facultative biped
facultative bipeds
facultative heterochromatin (current term)
facultative hyperopia
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fad

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