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Hogo de Vries gave his mutation theory o...

Hogo de Vries gave his mutation theory on organic evolution while working on `:`

A

Pisum sativum

B

Drosophila melanogaster

C

Oenothera lamarckiana

D

Althea rose

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The correct Answer is:
C
Hugo de Vries (1848-1935) proposed mutation theory for the formation of new species. He came to conclude this theory while working on Oenothera lamarckiana evening primrose. According to him, new species are not formed by continuous variations but by sudden appearance of variations which he assigned as mutations. He stated that these mutations are heritable and persist in successive generations
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NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-EVOLUTION -EXERCISE
  1. Which one of the following experiments suggests that simplest living o...

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  2. There are two opposing views about origin of modern man. According to ...

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  3. Hogo de Vries gave his mutation theory on organic evolution while work...

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  4. Using imprints from a plate with complete medium and carrying bacteria...

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  5. Which one of the following phenomena supports Darwin's concept of natu...

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  6. According to Oparin, which one of the following was not present in the...

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  7. Presence of gills in the tadpole of frog indicates that :

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  8. What kind of evidences suggested that man is more closely related with...

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  9. Age of fossils in the past was generally determined by radiocarbon met...

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  10. Darwin in his 'Natural Selection Theory' did not believe in any role o...

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  11. In recent years,DNA sequences (nucleotide sequence) of maternal DNA an...

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  12. Industrial melanism is an example of

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  13. In a random mating population in equilibrium, which of the following b...

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  14. Random genetic drift in a population probably result from

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  15. Which one of the following sequences was propsoed by Darwin and Wallac...

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  16. Convergent evolution is illustrated by

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  17. Which one of the following correctly describes the homologous structur...

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  18. Which of the following pair is homologous organ?

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  19. Genetic drift operates in :

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  20. In which condition the gene ratio remains constant for any species ?

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