Who was the first scientist who described the principles of dominance?

The first scientist to describe the principles of dominance was Gregor Mendel. In the mid-19th century, Mendel conducted experiments with pea plants and established the foundational laws of inheritance, including the Law of Dominance. This principle states that some alleles are dominant and can mask the expression of recessive alleles in offspring. Mendel's work laid the groundwork for modern genetics.