Question:

Which of the following statement is true for X-linked recessive inheritance?

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Understand the inheritance pattern of X-linked recessive traits and how it differs between males and females.
Updated On: Jan 4, 2025
  • All sons of a normal mother should show the trait.
  • All sons of an affected mother should show the trait.
  • Many more females than males should exhibit the trait.
  • All daughters of a normal mother should show the trait.
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The Correct Option is B

Solution and Explanation

In X-linked recessive inheritance, an affected mother has two defective X chromosomes and will pass one defective X chromosome to all her sons. Since males inherit only one X chromosome, they will always express the trait if they inherit the defective gene. Females are less frequently affected because they require two copies of the defective gene to show the trait.

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