Final answer:
A sex-influenced trait is influenced by sex hormones, an example is androgenic alopecia. A sex-linked trait is located on the sex chromosomes, an example is red-green colorblindness.
Step-by-step explanation:
A sex-influenced trait is a trait that is influenced by the presence or absence of certain sex hormones. One example of a sex-influenced trait is androgenic alopecia. It is a condition where the hair follicles are sensitive to androgens, resulting in hair loss in males but not in females.
Sex-influenced traits are different from sex-linked traits which are traits located on genes on the sex chromosomes. An example of a sex-linked trait is red-green colorblindness, which is more common in males because it is recessive and located on the X chromosome.