Gene for baldness is present on sex chromosome or on autosomes?How does autosomal gene look like Does they have x or y chromosomes?

baldness is sex influenced traits.these are those autosomal genes which are influenced by the sex of the bearer.these traits appear more frequently in one sex than in other sex like pattern baldness affected by male sex hormone testosterone.

Baldness can occur in both male and female, though it is more common in males. This is so because baldness trait is influenced by male hormone known as testosterone.
The alleles of this trait are present on autosomes. Autosomal gene is present on a non- sex chromosome.

Please note:
1. If a male has even one recessive allele then also he will show baldness.
2. BUT it will take two recessive allele for the female to show the baldness.