Question

Hugo de vries was working with plant O.lamarkiana.He was responsible for proposing which theory of evolutionary process?

Answer 1

Hugo de Vries proposed the mutation theory of evolution based on his work on the plant O. lamakiana. When O. Lamarkiana was self-pollinated, the majority of F1 plants seen were similar to the parents, but a few were different plants. On self-pollinating the different plants, the majority of the plants seen were similar to the parents while a few were still more different plants and this continued generation after generation. These plants appeared to be new species, from this Vries suggested that new types of inherited characteristics may appear suddenly without any previous indication of their presence in the race. He named these sudden variations mutation and on the basis of these observations he proposed the mutation theory of evolution.