The correct option is A Ernst Mayr
Ernst Mayr is regarded as the Darwin of the 20th century. He was awarded with the 'Triple Crown of Biology'.
Gregor Mendel is the father of genetics. Genetics is the study of the process of passing on of characteristics from one generation to another.
Robert Hooke was the first person to observe a cell under a microscope.
Rudolph Virchow gave the theory 'Omnis cellula e cellula' or 'living cells exist from pre-existing cells'