Question
Biology Question on Mechanism Of Evolution
Hugo de Vries gave his mutation theory on organic evolution while working on
A
Pisum sativum
B
Drosophila melanogaster
C
Oenothera lamarckiana
D
Althea rosea
Answer
Oenothera lamarckiana
Explanation
Solution
Hugo de Vries, a Dutch botanist, one of the independent rediscoverers of Mendelism, put forward his views regarding the formation of new species in 1901. According to him, new species are not formed by continuous variations but by sudden appearance of variations, which he named as mutations. Hugo de Vries stated that mutations are heritable and persist in successive generations. He conducted his experiments on Oenothera lamarckiana (evening primrose).