PATHOLOGY

Detailed explanation-1: -And in humans this is the X or the Y chromosomes. And so some of the more familiar sex-linked traits are hemophilia, red-green color blindness, congenital night blindness, some high blood pressure genes, Duchenne muscular dystrophy, and also Fragile X syndrome.

Detailed explanation-2: -Sex-linked diseases are passed down through families through one of the X or Y chromosomes. X and Y are sex chromosomes. Dominant inheritance occurs when an abnormal gene from one parent causes disease, even though the matching gene from the other parent is normal.

Detailed explanation-3: -A characteristic of X-linked inheritance is that fathers cannot pass X-linked traits to their sons (no male-to-male transmission). A condition is considered Y-linked if the altered gene that causes the disorder is located on the Y chromosome, one of the two sex chromosomes in each of a male’s cells.

Detailed explanation-4: -Here are some common X-linked traits and disorders: Red-green color blindness is a recessive trait linked to the X chromosome. People who have it can see normally, but can’t distinguish shades of red and green. Among those with Northern European ancestry, it occurs in about 1 in 12 males but only 1 in 200 females.