Final answer:
Sex-linked traits are determined by genes located on the sex chromosomes (X or Y) and can be more common in males. An example of a sex-linked trait is red-green color blindness.
Step-by-step explanation:
Sex-linked traits refer to traits that are located on the sex chromosomes, specifically the X or Y chromosome. In humans, females have two X chromosomes (XX) and males have one X and one Y chromosome (XY). If a trait is sex-linked, it means that it is determined by genes located on the sex chromosomes. For example, red-green color blindness is a sex-linked trait that is more common in males because it is carried on the X chromosome.