In placental mammals, such as humans, the dosage compensation mechanism to equalize expression of sex-linked

genes in males and females involves ____.



a. doubling the gene expression for most genes on the X chromosome in males
b. doubling the number of X chromosomes in males during embryonic development
c. having all major genes on the X chromosome also present on the Y chromosome
d. halving the gene expression for most genes on each X chromosome in females
e. inactivating one of the two X chromosomes in most female somatic cells


ANSWER: e

Biology & Microbiology

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