Simplify the following text for a Grade 13 native English-speaking person.
Original: During his distinguished career , Morgan wrote 22 books and 370 scientific papers , and , as a result of his work , Drosophila became a major model organism in contemporary genetics .
Simplified: During his distinguished career , Morgan wrote 22 books and 370 scientific papers , and , as a result of his work , Drosophila became a major ` model organism ' in genetics .