Question

which is the definition of a sex - linked trait?
○ a trait that is coded by a gene located on a sex chromosome
○ a trait usually inherited with another trait on the same chromosome
○ at allele that is inherited from a particular gender
○ a trait that is shared by siblings of the same gender

Explanation:

A sex - linked trait is defined by the location of the gene that codes for it. Sex chromosomes (like the X and Y chromosomes in humans) carry genes for certain traits. If a trait is coded by a gene on a sex chromosome, it is a sex - linked trait.

• The second option describes linked genes (not specifically sex - linked).
• The third option is an incorrect description as alleles are inherited from both parents (not just a particular gender for sex - linked in a general sense).
• The fourth option is too vague and not the correct biological definition.

Answer:

a trait that is coded by a gene located on a sex chromosome