Which of the following is a typical characteristic of human traits that follow an X-linked recessive inheritance pattern?Group of answer choicesoften more males than females are affectedoften more females than males are affectedit is passed from father to all sons
Question
Which of the following is a typical characteristic of human traits that follow an X-linked recessive inheritance pattern?Group of answer choicesoften more males than females are affectedoften more females than males are affectedit is passed from father to all sons
Solution
The typical characteristic of human traits that follow an X-linked recessive inheritance pattern is that often more males than females are affected.
Here's why:
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Males have one X and one Y chromosome (XY), while females have two X chromosomes (XX).
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If a trait is X-linked recessive, it means that the gene carrying this trait is located on the X chromosome, and it takes two copies of the gene (one on each X chromosome) for the trait to be expressed in females.
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Males, however, only have one X chromosome. So, if they inherit the X chromosome carrying the recessive gene from their mother, they will express the trait, as they don't have another X chromosome to mask the effect of the recessive gene.
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Therefore, X-linked recessive traits are often more common in males than in females.
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It's also important to note that fathers cannot pass X-linked traits to their sons because fathers pass their Y chromosome to their sons, not their X chromosome. The X chromosome in males always comes from the mother.
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