Morgan was an American zoologist noted for his ingenious demonstration of the physical basis of heredity and the importance of the gene. He was awarded the Nobel Prize in Physiology or Medicine in 1933. Initially skeptical of Gregor Mendel’s research and Charles Darwin’s theory of natural selection, Morgan performed rigorous experiments demonstrating that genes were discrete chromosomal units of heredity. Much of his research was done by observing Drosophila melanogaster, which is what? Discuss
Source: The Free Dictionary