Sex-linked Traits

Sex-linked traits are characteristics determined by genes located on the sex chromosomes, primarily the X chromosome. Because males have one X and one Y chromosome, they are more likely to express certain traits or conditions linked to the X chromosome if they inherit a defective gene. Examples include hemophilia and color blindness. Females have two X chromosomes, so they typically need two copies of the defective gene to show the trait, making it less common in females. These traits are inherited differently from other genes because of their location on the sex chromosomes.