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प्रश्न
Give the main features of mutation theory.
थोडक्यात उत्तर
उत्तर
Mutation theory was proposed by Hugo de Vries in 1901.
The main features of mutation theory are:
- Mutations are large, sudden, random and discontinuous variations in a population.
- These changes are inheritable and may not be directional.
- Mutations provide the raw material for organic evolution.
- Mutation may be useful or harmful. Useful mutations are selected by nature.
- Accumulation of these mutations over a period of time leads to the origin and establishment of new species.
- Harmful mutation may persist or get eliminated by nature.
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Theories of Biological Evolution - Mutation Theory
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संबंधित प्रश्न
Short answer question.
Write the objections to Mutation theory of Hugo de Vries.
Any random fluctuation or alteration in the allele frequency occurring in the natural population by pure chance is called ____________.
Hugo de Vries proposed 'Mutation theory' by studying the plant ______
Match list I with list II
| List I | List II | ||
| A. | A pair of chromosomes extra with diploid | i) | monosomy |
| B. | One chromosome extra to the diploid | ii) | tetrasomy |
| C. | One chromosome loses from diploid | iii) | trisomy |
| D. | Two individual chromosomes lose from diploid | iv) | double monosomy |
What are the different types of chromosomal aberrations?
