- 1(current)
Q. No.According to Hugo de Vries, the mechanism of evolution is:
1. Multiple-step mutations
2. Saltation
3. Phenotypic variations
4. Minor mutations
2. Saltation
3. Phenotypic variations
4. Minor mutations
Subtopic: Â Mechanism of Evolution |
 84%
From NCERT
NEET - 2018
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The idea of mutations was brought forth by:
| 1. | Gregor Mendel, who worked on Pisum sativum |
| 2. | Hardy Weinberg, who worked on allele frequencies in a population |
| 3. | Charles Darwin, who observed a wide variety of organisms during sea voyages |
| 4. | Hugo do Vries, who worked on evening primrose |
Subtopic: Â Mechanism of Evolution |
 86%
From NCERT
AIPMT - 2012
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Select the correct statement regarding the mutation theory of evolution:
| 1. | This theory was proposed by Alfred Wallace. |
| 2. | Variations are small directional changes. |
| 3. | Single-step large mutation is a cause of speciation. |
| 4. | Large differences due to mutations arise gradually in a population. |
Subtopic: Â Mechanism of Evolution |
 70%
From NCERT
NEET - 2022
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Variations caused by mutation, as proposed by Hugo de Vries, are:
1. small and directionless
2. random and directional
3. random and directionless
4. small and directional
Subtopic: Â Mechanism of Evolution |
 79%
From NCERT
NEET - 2019
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- 1(current)
Q. No.
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