Final answer:
Males more frequently exhibit sex-linked traits due to having only one X chromosome, so any recessive allele on this chromosome is expressed. Females have two X chromosomes and must inherit two copies of the recessive allele to show the trait.
Step-by-step explanation:
The gender that shows sex-linked traits more often is the male, and the reason is linked to the genetic differences between males and females. Humans have 22 pairs of autosomes and one pair of sex chromosomes: XX for females and XY for males. Since males have only one X chromosome, any recessive trait on this chromosome will be expressed because there is no corresponding allele on the Y chromosome, which is shorter and contains fewer genes. This is why X-linked recessive disorders such as red-green color blindness, Types A and B hemophilia, and muscular dystrophy, are disproportionately observed in males. Females, on the other hand, have two X chromosomes, so they must inherit two copies of a recessive allele to exhibit the trait. If they have only one recessive allele, they become carriers without showing symptoms, although carrier females can sometimes express mild forms due to the inactivation of the dominant allele on the other X chromosome.