Home
Class 12
BIOLOGY
Assertion (A ) : Gene flow increase gene...

Assertion (A ) `:` Gene flow increase genetic variations.
Reason (R ) `:` The random introduction of new alleles into recipient population and their removal from the donor population affects allele frequency.

A

Both (A ) and (R ) are true and (R ) is the correct explanation of (A).

B

Both (A ) and (R ) are true but (R ) is not the correct explanation of (A)

C

(A ) is true statement but (R ) is false

D

Both (A ) and (R ) are false

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ORGANIC EVOLUTION

    GRB PUBLICATION|Exercise SPECIATION|22 Videos
  • MICROBES IN HUMAN WELFARE

    GRB PUBLICATION|Exercise Assertion-Reason Type Questions|49 Videos
  • ORGANISMS AND ENVIROMENT

    GRB PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS|248 Videos

Similar Questions

Explore conceptually related problems

State and explain any three factors affecting allele frequency in population.

Fill up the balnks in the following paragraph by selecting the correct option. When migration of a section of population to another place and population occurs, I change in the original as well as in the new population new genes/ alleles are added to the ii, population and these are lost from the population. These would be a iv if this gene migration, happens multiple times. if the same change occurs by chance, it is called v. sometimes the change in allele frequency is so different in the new sample of population that they become a diffrent species. The original drifted population becomes founders and the effect is called vi

In which condition gene pool/allelic frequency in population remains constant from generation to generation :-

Any random fluctuation in allele frequency, occurring in the natural population by pure chance is called __________.

Assertion (A): Sexual reproduction increases genetic diversities and plays a role in origin of new species. Reason ( R): Sexual reproduction involves formation of gametes and fusion of gametes.

Assertion (A) :With increasing the temperature,equilibrium constant (K_(C)) value increases for endo thermic reactions. Reason "(R)" :As per Boltzmann's distribution of molecules over available energy levels,with increasing the temperature population of more energy molecules increases at the expense of population of less energy molecules

Reduction in allele frequencies in a population which often prevent the species from revesing its path of extinction is called

Assertion : The total genes and their alleles in a populations are called gene pool. Reason : The gene pool remains a constant in a population.

GRB PUBLICATION-ORGANIC EVOLUTION -REPRODUCTIVE ISOLATION
  1. Gene flow is the transfer of genes :

    Text Solution

    |

  2. In the developmental history of mammalian heart. It is observed that i...

    Text Solution

    |

  3. Assertion (A ) : Gene flow increase genetic variations. Reason (R ) ...

    Text Solution

    |

  4. Which of the following animals is not only a living fossil but also co...

    Text Solution

    |

  5. Protylopus was the ancestor of :

    Text Solution

    |

  6. Mammals evolved from therapsid reptiles in Triassic period. The type o...

    Text Solution

    |

  7. Match the following : (GRBOBJBIOIINDC56E01464Q01)

    Text Solution

    |

  8. Myrmecobius and Myrmeocophaga are closely related and have similar ada...

    Text Solution

    |

  9. Which one of the following scientist's name is correctly mathce dwith ...

    Text Solution

    |

  10. Darwin's Finches are an excellent example of

    Text Solution

    |

  11. Which one of the following pairs of items correctly belongs to the cat...

    Text Solution

    |

  12. An important evidence in favour of organic evolution is the occurrence...

    Text Solution

    |

  13. An evolutionary process giving rise to new species adapted to new habi...

    Text Solution

    |

  14. Sweet potato and potato are example of :

    Text Solution

    |

  15. Appearance of teeth in the embryos of birds is an example of :

    Text Solution

    |

  16. Which of the following is not a concept of Lamarck ?

    Text Solution

    |

  17. The theory of panagenesis was rejected due to the acceptance of :

    Text Solution

    |

  18. Match the scientists and their contributions in the field of evolution

    Text Solution

    |

  19. The principle that gives the geneticists a tool to determine when evol...

    Text Solution

    |

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

    Text Solution

    |