Question

Sex-linked diseases are more prominent in men because ______.

Options

• they have more number of genes

• their genes are dominant

• they have less number of genes

• their genes are recessive

Answer 1

Sex-linked diseases are more prominent in men because they have less number of genes.

Explanation:

Males are hemizygous (XY) and have only one X chromosome (meaning they have a lesser number of X-linked genes/alleles compared to (XX) females). Because there is no second X chromosome to mask it, a single recessive gene expresses itself fully and causes the disease.