Final answer:
Biology is the study of heredity and genetic variations in organisms. Genetic engineering is the manipulation of an organism's DNA using biotechnology.
Step-by-step explanation:
Biology is the study of heredity and the different variations in inherited traits of organisms. On the other hand, genetic engineering involves the manipulation of an organism’s DNA using biotechnology. Genetic engineering allows researchers to directly alter an organism's genetic makeup by introducing new combinations of genetic material through recombinant DNA technology.