What Is the Result of the Activation of the XIST

question 21

Multiple Choice

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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