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The most likely reason for the developme...

The most likely reason for the development of resistance against pesticides in insect damaging a crop is

A

Random mutations

B

Genetic recombination

C

Direct mutations

D

Acquired heritable changes

Text Solution

Verified by Experts

The correct Answer is:
A
The environmental stress ( as pesticides) does not cause direct changes in genome,mutation, which results in phenotypes that are better adapted to the new environment (e.g. certain pesticides)
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ARIHANT NEET-MECHANISM OF EVOLUTION-Chapter Exercises (C ) Medical entrances gallary (Collection of Questions Asked in NEET & Various Medical Entrance Exams )
  1. Which mechanism of evolution affects the genetic make-up in a populati...

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  2. In population of 1000 individuals 360 belongs to aa. Based on this dat...

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  3. Which of the following is the first step in allopatric speciation ?

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  4. Variation in gene frequencies within populations can occur by chance r...

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  5. The tendency of population to remain in genetic equilibrium may be dis...

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  6. Which of the following species are restricted to an area??

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  7. Population are said to be allopathic when

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  8. Biological concept of species is mainly based on

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  9. The process by which organisms with different evolutionary history evo...

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  10. Species is a

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  11. Read the following statements and select the correct option A. Incre...

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  12. Related species which are reproductively isolated but morphologically ...

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  13. Single step large mutation leading to speciation is also called

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  14. In the case of peppered moth (Biston betularia) the black-coloured fro...

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  15. Hardy-Weinberg equilibrium is known to be affected by gene flow, genet...

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  16. Change of frequency of alleles in a population results in evolution is...

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  17. Which of the following defines Hardy-Weinberg's law?

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  18. Industrial melanism as observed in peppered moth proves that the

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  19. The most likely reason for the development of resistance against pesti...

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  20. In a Mendelian population, the sum total of genes of all the individua...

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