Question

The idea of mutations was brought forth by

• A. Hugo de Vries, who worked on evening primrose.
• B. Hardy Weinberg, who worked on allele frequencies in a population.
• C. Charles Darwin, who observed a wide variety of organisms during a sea voyage.
• D. Gregor Mendel, who worked on Pisum sativum.

Answer 1

The correct option is A

Hugo de Vries, who worked on evening primrose.

The correct option is A.

Explanation of correct option:

1. Hugo de Vries believed that genetic mutations were responsible for the evolution of the species.
2. He was a believer of the mutation theory.
3. He was focused working on the evening primrose.
4. He noticed that new plant varieties appeared at random among conventional plants.
5. He named this directional and random phenomenon as mutation.

Explanation of incorrect options:

Option B:

1. Hardy Weinberg stated if there is no disturbance, then the variation of the population will remain the same.

Option C:

1. Charles Darwin stated that the variations are already present in nature and nature selects the best among them.
2. There is a struggle for existence among the organisms to survive.

Option D:

1. Gregor Mendel studied garden peas through hybridisation experiments.
2. He gave the basic laws on how traits are transferred from parents to progeny.

Final answer: The idea of mutations was brought forth by Hugo de Vries.