A female would get an X chromosome from

A female would get an X chromosome from

• A. Mom only
• B. Dad only
• C. Mom and Dad
• D. Neither parent

Answer: (C)

In humans, females have two X chromosomes, one from each parent. Eggs always carry an X chromosome, and sperm can carry either an X or a Y. When the offspring is female, the egg’s X combines with a sperm that also carries an X, so the daughter inherits an X chromosome from both mom and dad. That’s why the correct idea is that a female gets an X from mom and an X from dad. The other options don’t fit because a female cannot receive a Y chromosome to form her two Xs, and she cannot obtain an X from only one parent to become female.

In humans, females have two X chromosomes, one from each parent. Eggs always carry an X chromosome, and sperm can carry either an X or a Y. When the offspring is female, the egg’s X combines with a sperm that also carries an X, so the daughter inherits an X chromosome from both mom and dad. That’s why the correct idea is that a female gets an X from mom and an X from dad. The other options don’t fit because a female cannot receive a Y chromosome to form her two Xs, and she cannot obtain an X from only one parent to become female.