Home
Class 12
BIOLOGY
[A]: Centromere is the primary constrict...

[A]: Centromere is the primary constriction on the metaphase chromosome.
[R]: It helps to separate sister chromatids

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • Fungi

    TRUEMAN BIOLOGY|Exercise ASSERTION AND REASON|27 Videos
  • GENETICS AND EVOLUTION

    TRUEMAN BIOLOGY|Exercise SECTION-A|34 Videos

Similar Questions

Explore conceptually related problems

Metaphase chromosome with medial centromere is

The two chromatids of a metaphase chromosome represent

The two chromatids of a metaphase chromosome represent

In mitotic metaphase, each chromosome has _________ chromatids.

[A] : Centromere is concerned with splitting of chromosomes . [R] : Oxysome is present in centromere to split it .

Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centrometres. Or In which stage of meiosis homologous chromosomes are segregated

In disjunction (separation) of sister chromatids at anaphase

_______ is the failure of the two sister chromatids to separate in mitosis.

Region of chromosome where force is exerted during chromatid separation is

[A]: Metacentric chromosomes are seen V-shaped in anaphase [R]: In these chromosomes, the centromere occurs in the centre forming two equal arms.

TRUEMAN BIOLOGY-Genetics-ASSERTION AND REASON
  1. [A]: Sickle-cell anaemia is a genetically de- termined disorder affect...

    Text Solution

    |

  2. [A]: The deleted region of long arm of chro- mosome 7 contains the ela...

    Text Solution

    |

  3. [A]: Centromere is the primary constriction on the metaphase chromosom...

    Text Solution

    |

  4. [A]: Dolly, a sheep is an example of cloning. [R]: Cloning in anoth...

    Text Solution

    |

  5. Assertion (A) : Replication and transcription occur in the nucleus but...

    Text Solution

    |

  6. [A]: Cycads were prevalent during Jurassic period. [R]: Jurassic pe...

    Text Solution

    |

  7. [A]: Evolution is descent with modification. [R]: Evolution is der...

    Text Solution

    |

  8. [A]: Isolation is a mechanism which prevents interbreeding among other...

    Text Solution

    |

  9. [A]: Mesozoic era is known as the 'Age of Reptiles'. [R]: It was ...

    Text Solution

    |

  10. [A]: Radioactive carbon ^(14)C method is quite accurate for relativel...

    Text Solution

    |

  11. [A]: According to Hardy-Weinburg law both gene frequencies and genotyp...

    Text Solution

    |

  12. [A]: 'Ontogeny recapitulates phylogeny' was the concept put forward by...

    Text Solution

    |

  13. [A]: Vestigeal organs are those parts of the body which are greatly re...

    Text Solution

    |

  14. [A]: Homology is the similarity between organs of same animal based on...

    Text Solution

    |

  15. [A]: Ear muscles of external ear in man are well developed. [R]:...

    Text Solution

    |

  16. [A]: Convergent evolution leads to production of analogous similaritie...

    Text Solution

    |

  17. [A]: Heritable changes are also called muta- tions. [R]: Mutation...

    Text Solution

    |

  18. [A]: In some organisms the end stages of the ancestral development pat...

    Text Solution

    |

  19. [A]: Homologous organs have similar structure but different functions....

    Text Solution

    |

  20. [A]: In large groups of animals and plants, there are identical enzyme...

    Text Solution

    |