Question

Beard in human male is an example of ____

• A. sex-linked trait
• B. sex limited trait
• C. sex influenced trait
• D. Mendelian autosomal trait

Answer 1

The correct option is B sex limited trait

Sex-linked traits - Traits which are coded for by the genes present in the sex chromosomes. Eg Colour blindness.

Sex influenced traits are traits are coded for by the genes present in the autosomes, but their expression is influenced by the sex of the individual. These genes are dominant for one sex and recessive for the other.
Eg. Pattern baldness

Sex-limited traits are traits are also autosomal and causes the two sexes to shoe separate phenotypes for the same gene. Secondary sexual characteristics like moustaches and beard are sex limited traits.