The parents together contribute the blood, the mental capacity, the resistance or susceptibility to disease, the appearance, the color of hair, eyes, skin, and every other inheritable trait common to both male and female.
(The parents; together contribute; the blood, the mental capacity, the resistance or susceptibility to disease, the appearance, the color of hair, eyes, skin, and every other inheritable trait common to both male and female)
The parents
together contribute
the blood, the mental capacity, the resistance or susceptibility to disease, the appearance, the color of hair, eyes, skin, and every other inheritable trait common to both male and female