If the gene is linked to the “X” chromosome, and itis recessive, women will not express the disorder.– Why?
Question
If the gene is linked to the “X” chromosome, and itis recessive, women will not express the disorder.– Why?
Solution
Women have two X chromosomes. If a gene linked to the X chromosome is recessive, it means that the trait it codes for will only be expressed if both copies of the gene (one on each X chromosome) carry the mutation. If only one X chromosome carries the mutation, the other normal X chromosome will compensate for it, and the disorder will not be expressed. This is why women, who have two X chromosomes, are less likely to express X-linked recessive disorders compared to men, who have only one X chromosome.
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