hereditarian

[huh-red-i-tair-ee-uh n] /həˌrɛd ɪˈtɛər i ən/
noun
1.
a person who believes that differences between individuals or groups, including moral and intellectual attributes, are predominantly determined by genetic factors (opposed to environmentalist).
adjective
2.
characteristic of or based on such belief:
hereditarian theories.
Origin
1880-85; heredit(y) or heredit(ary) + -arian
Related forms
hereditarianism, noun
British Dictionary definitions for hereditarianism

hereditarianism

/həˌrɛdɪˈtɛərɪəˌnɪzəm/
noun
1.
(psychol) a school of thought that emphasizes the influence of heredity in the determination of human behaviour Compare environmentalism