If a woman has an X-linked recessive disorder, all of her daughters will have it.Group of answer choicesFalseTrueNext

Understanding X-Linked Recessive Disorders

1. Definition: X-linked recessive disorders are genetic conditions that are carried on the X chromosome. Males (XY) have one X chromosome, while females (XX) have two.

2. Inheritance Pattern: For a woman with an X-linked recessive disorder, her genotypes are typically represented as $X^dX$, where $X^d$ is the X chromosome carrying the disorder.

Inheritance Analysis

1. Daughters' Genotypes: When a woman with the disorder (genotype $X^dX$) has children, she passes one of her X chromosomes to each daughter. The father’s contribution (which is an X chromosome for daughters) can either be a normal X ($X^N$) or an affected X ($X^d$).

2. Possible Combinations:

   • If the father has a normal X chromosome ($X^N$):
     • Daughters' genotypes: $X^dX^N$ (carriers, not affected)
   • If the father has an affected X chromosome ($X^d$):
     • Daughters' genotypes: $X^dX^d$ (affected)

Conclusion

From the analysis, we can conclude that not all daughters of a woman with an X-linked recessive disorder will have the disorder, as it depends on the father's X chromosome.

Final Answer

False. Not all daughters will have the disorder; they can either be carriers or affected, depending on the father's genetic contribution.