Question

Hugo de Vries proposed the mutation theory of organic evolution after his experiments on ______.

Options

• Garden pea

• Evening primrose

• Fruit fly

• Four O’ clock plant

Answer 1

Hugo de Vries proposed the mutation theory of organic evolution after his experiments on evening primrose.

Explanation:

After conducting tests on the evening primrose plant (Oenothera lamarckiana), Hugo de Vries put out the mutation theory of organic evolution. He noticed abrupt and contagious changes in certain of this plant's characteristics, which he called "mutations."