Question

How many alleles of genes for X-linked traits are present in female and male individuals, respectively?

Answer 1

Alleles

1. These are a pair of genes that occupy a specific location on a particular chromosome that controls the same trait.
2. Alleles may appear in pairs or in multiple forms, which affect a specific trait of the generation.

X-linked traits

It is a kind of trait in which genes can be found only on the X- chromosomes.

1. Females have two alleles of the gene for X-linked traits as females have two X- chromosomes (XX), on the other hand, males have one allele of the gene for X-linked traits as males have only one chromosome(XY).
2. In this way, X-linked dominance is more common in females as males can only get an X chromosome from their mother whilst females to get an X chromosome from both parents.
3. As a result, females tend to show a higher prevalence of X-linked dominant disorders because they have more of a chance to inherit a faulty X chromosome.