Final answer:
X-linked recessive diseases affect males more frequently due to their inheritance of a single X chromosome. Females need two copies of the recessive allele to express the trait.
Explanation:
X-linked recessive (XR):
In X-linked recessive inheritance, the gene responsible for the disease is located on the X-chromosome and is recessive. This means that males are more frequently affected by X-linked recessive diseases because they have only one X chromosome, while females need to inherit two copies of the recessive allele to express the trait. Examples of X-linked recessive disorders include red-green color blindness and hemophilia.
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