5.3 - o Requires the Xist gene o One active X always...

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X-inactivation in female mammals o Two copes of the x-chrmosomes o One of the copies is silenced by methylation o Begins at a locus called X-inactivation center (Xist) then spreads across the copy during embryo development
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Unformatted text preview: o Requires the Xist gene o One active X always remains, even in unusual circumstance, ex; X,XX, or XXXX individuals (apparent Xist can count) (calicle cat- cyheamiraa)...
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