Gene - The physical and functional unit of heredity made up of DNA. Every individual has two copies of each gene, one inherited from the mother and the other from the father.⏎
Endemic - The baseline level of disease usually present in a community.⏎
Genetics - A branch of biology that studies heredity and variation in organisms.⏎
Ecology - A branch of science that deals with the relation of organisms to one another and their physical environment.⏎
Gastrointestinal Tract - The structure in the body, beginning with the mouth and extending to the anus, through which food is ingested, broken down, and absorbed to provide the body with nutrients, and waste products are excreted.⏎