Revolution in genetics
A monk considered the father of modern genetics. The work of Gregor Mendel, a pioneer in the field of heredity, laid the foundation for our understanding of how traits are passed from generation to generation.
One of his most important discoveries was the first law of heredity (law of segregation or principle of uniformity). During the formation of gametes, the alleles that determine a trait will segregate independently of each other. Thus, the offspring will inherit one allele from each parent, and the combination of alleles will determine the trait.