Cambridge Encyclopedia » Cambridge Encyclopedia Vol. 67

sex linkage - Sex-linked traits in humans, Sex-linked traits in other mammals

chromosome chromosomes male genes

Genes carried on the X and Y chromosomes, and the characteristics they control; also called X linkage. In mammals females have two X chromosomes and males an X and a Y chromosome. Women transmit one X chromosome to either sons or daughters, while men pass their X chromosome only to their daughters. A characteristic feature of X-linked inheritance is thus the absence of male-to-male transmission. Most X-linked diseases in humans are inherited as recessives, with the males the affected sex (eg haemophilia, Duchenne muscular dystrophy). As there are only a few functional genes on the Y chromosomes in humans, the terms sex linkage and X linkage have become synonymous.

User Comments

Your email address will be altered so spam harvesting bots can't read it easily.
Hide my email completely instead?

Cancel or

Vote down Vote up

over 7 years ago

plz kindly send me few openion mt sex link is curve in right side and sex fluid is very light and link is week i m still waitng to ur answere thank u ..........