"familiarity breeds contempt" is challenged by which concept

How do adaptation affect a species?

An organ system consists of a group of organs that performs specific functions necessary for the survival of an organism. humans have eleven different organ systems: integumentary, skeletal, muscular, nervous, endocrine, circulatory, lymphatic, respiratory, digestive, urinary, and reproductive. discuss the function of neurons, the brain and the spinal cord within the human nervous system while explaining the interrelationship of each organ.

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.