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According to de Vries, mutations are...

According to de Vries, mutations are

A

random and directionless

B

small and directional

C

Either (a) or (b)

D

None of the above

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ARIHANT NEET-THEORIES OF EVOLUTION-Chapter exercise A (Taking it together (Assorted Questions of the chapter for advanced Level Practice))
  1. Hugo de Vries was concerned with

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  2. de Vries believed that mutation causes

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  3. According to de Vries, mutations are

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  4. The first attempt to solve the problem of organic evolution was relate...

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  5. Geospriza fontis is the

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  6. Which of the following finch takes insects in the air and on the groun...

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  7. de Vries believed mutation caused speciation and, hence called it

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  8. The key concept of darwinian theory of evolution is

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  9. Alfred Wallace was a naturalist from

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  10. When was Darwin's 'Origin of Species' published?

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  11. The scientist, who first stressed on adaptation as a means of evolutio...

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  12. Darwin raised several types of .....through artifical selection

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  13. According to Lamarck, evolution is towards

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  14. The name Galapagos islands has been given on the basis of occurrence o...

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  15. Forthcoming generation will be less adaptive than the present generati...

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  16. Theory of pangenesis is connected with

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  17. The concept of mechanism of origin of variations was suggested by

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  18. What is Lamarck credited with?

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  19. According to neo-darwinism, natural selection operates through

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  20. According to neo-darwinism, variations which are the raw material of e...

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