Home
Class 12
BIOLOGY
Assertion (A). Events in pachytene play ...

Assertion (A). Events in pachytene play a key role in evolutionary changes in organisms
Reason`(R)`.Exchange of genetic material takes place between sister chromatids of homologous chromosomes

A

A and R are true, R is corret explanation of A

B

Both A and R are true, R is not the correct explanation of A

C

A is true, R is false

D

A is false, R is true.

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CELL CYCLE (CELL DIVISION)

    DINESH PUBLICATION|Exercise CHECK YOUR GRASP|18 Videos
  • CELL CYCLE (CELL DIVISION)

    DINESH PUBLICATION|Exercise BRAIN TEASERS-III|85 Videos
  • CELL CYCLE (CELL DIVISION)

    DINESH PUBLICATION|Exercise BRAIN TEASERS-III|85 Videos
  • BIOLOGICAL CLASSIFICATION

    DINESH PUBLICATION|Exercise CYC|11 Videos
  • CHEMICAL COORDINATION AND REGULATION

    DINESH PUBLICATION|Exercise Brain Teasers-V|114 Videos

Similar Questions

Explore conceptually related problems

Exchange of genetic material between non-sister chromatids is ……………..

Exchange of segments between non -sister chromatids of homologous chromosomes is

Crossing over is the exchange of genetic material between ______chromatids of homologous chromosomes.

Write true or false for the following. Crossing over is the exchange off genetic material between two non-sister chromatids of homologous chromosome.

The exchange of genetic material between chromatids of paired homologous chromosomes during first meiotic division is called

Assertion : Crossing over take place during pachytene stage. Reason : It is a process of interchange of chromatid material between non sister chromatid of homologous chromosomes.

[A] : Crossing over takes place during pachytene stage . [R] : It is a process of inter change of chromatin material between one sister chromatid of each homologous chromosome .

A : Crossing over is exchange of genetic material between non-homologous chromosomes. R : it produces new linkages.

The exchange of segments of non-sister chromatids between chromosomes of a homologous pair is termed

DINESH PUBLICATION-CELL CYCLE (CELL DIVISION)-REVISION QUESTIONS
  1. Arrange the following events of meiosis in correct sequence (a) Cro...

    Text Solution

    |

  2. Find the correct match {:((a),"Anaphase I",(i),"Splitting of the cen...

    Text Solution

    |

  3. Assertion (A). Events in pachytene play a key role in evolutionary cha...

    Text Solution

    |

  4. Identify the correct combination regarding ana[hase, anaphase I and an...

    Text Solution

    |

  5. A duplicated chromosome has how many chromatids

    Text Solution

    |

  6. Cells of certain species of animals have six pairs of chromosomes. How...

    Text Solution

    |

  7. An interconnecting membranous network of the cell composed of vesicles...

    Text Solution

    |

  8. Which of the following is not true for meiosis

    Text Solution

    |

  9. Progression of cell cycle is regulated by the concentration of which t...

    Text Solution

    |

  10. Which of the following phases correspond to the interval between mitos...

    Text Solution

    |

  11. Which of these is not a key feature of meiosis

    Text Solution

    |

  12. When a cell undergoes meiosis, the number of chromosomes in daughter c...

    Text Solution

    |

  13. In plant cells, cytokinesis occurs by

    Text Solution

    |

  14. The enzyme recombinase is required in which stage of meiosis ?

    Text Solution

    |

  15. In meiosis, the centromere divides during

    Text Solution

    |

  16. What is not seen during mitosis in somatic cells

    Text Solution

    |

  17. A cell at telophase stage is observed by a student in a plant brought ...

    Text Solution

    |

  18. When cell has stalled DNA replication fork , which checkpoint should b...

    Text Solution

    |

  19. Mathc the stages of meisos in Column I to their characteristic feature...

    Text Solution

    |

  20. Identify the meiotic sage in which the homologous chromosomes separate...

    Text Solution

    |