Original: He is known chiefly for suggesting the concept of genes , rediscovering the laws of heredity in the 1890s while unaware of Gregor Mendel 's work , for introducing the term '' mutation '' , and for developing a mutation theory of evolution .
Simplified: He is known chiefly for suggesting the concept of genes , rediscovering Gregor Mendel 's laws of heredity in the 1890s , and for developing a mutation theory of evolution .