What Is the Apparent Purpose for X Inactivation in Humans

question 17

Multiple Choice

What is the apparent purpose for X inactivation in humans and other mammals?

• A) It allows for the levels of expression of genes on the X chromosome to be similar in males and females.
• B) It allows for the levels of expression of genes on the autosomes to be similar to the levels of genes on the X chromosome.
• C) It suppresses the expression of genes on the Y chromosome in males.
• D) It reduces the amount of nondisjunction during meiosis in females.
• E) It enhances the level of pairing between the two X chromosomes during meiosis in females.

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