Why are re males t fees affcted by sex linked recessive disease?

Recessive sex-linked diseases, such as hemophilia or color blindness, are typically carried on the X chromosome. Males have one X and one Y chromosome (XY), meaning they lack a second X chromosome that could potentially mask the recessive allele. If a male inherits an X chromosome carrying a recessive disease allele, he will express the disease because there is no corresponding allele on the Y chromosome to counteract it. In contrast, females have two X chromosomes (XX), so they can be carriers without expressing the disease if the other X carries a normal allele.