EVERYDAY SCIENCE

Detailed explanation-1: -To explain how these variation actually arise, Hugo de Vries proposed the mutation theory based on his experiments on the plant Oenothera lamarckiana (evening primrose). According to this, sudden heritable changes in the genome of an organism would result in variation, speciation and eventually, evolution.

Detailed explanation-2: -The theory of mutation given by Hugo de Vries suggested that evolution is fueled by the occurrence of the discontinuous process called mutation, that arises in the genetic material suddenly and are transmitted to the next generation.

Detailed explanation-3: -Hugo de Vries stated that mutations are heritable and persist in successive generations. He conducted his experiments on Oenothera lamarckiana, (evening primrose) and found several aberrent types.

Detailed explanation-4: -Hugo de Vries, a Dutch botanist, conducted his experiments on Oenothera lamarckiana (evening primrose) and explained the concept of mutation. Q. De Vries postulated the theory of mutation by working on evening primrose.

Detailed explanation-5: -In the history of evolutionary biology, Hugo de Vries is known as a proponent of the mutation theory of evolution, in which new species are believed to arise by single mutational events (de Vries 1901–1903, 1909, 1910).