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प्रश्न
Short answer question.
Write the objections to Mutation theory of Hugo de Vries.
उत्तर
Objections to Mutation Theory are as follows:
1. The large and discontinuous variations observed by Hugo de Vries were actually due to chromosomal aberrations. Gene mutations usually bring about only minor changes.
2. Rate of mutation is very slow as compared to the requirement of evolution.
3. Chromosomal aberrations have little significance in evolution as they are quite unstable.
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संबंधित प्रश्न
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 ______
Give the main features of mutation theory.
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?
