Final answer:
Sex-linked inheritance is the pattern shown for a trait occurring in one sex but not in the opposite sex. It occurs when traits are located on genes on the sex chromosomes, with sex-linked traits usually referring to traits due to genes on the X chromosome.
Step-by-step explanation:
The inheritance pattern that is shown for a trait occurring in one sex but not in the opposite sex is called sex-linked inheritance. This refers to the inheritance of traits that are located on genes on the sex chromosomes. Sex-linked traits usually refer to traits due to genes on the X chromosome. Since males and females do not have the same sex chromosomes, there will be differences between the sexes in how these sex-linked traits are expressed.