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What Is the Result of the Activation of the XIST

Question 21

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What is the result of the activation of the XIST gene in mammals?


A) the inactivation of one of the X chromosomes,which then becomes a Barr body in females
B) activation of the SRY gene that results in the development of male sexual characteristics
C) the activation of genes on both X chromosomes in females
D) the expression of sex-linked traits in males

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