Home
Class 12
BIOLOGY
Small disc shaped structures at the surf...

Small disc shaped structures at the surface of centromeres are called chiasmata.

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • CELL BIOLOGY (CELL STRUCTURE, FUNCTION & CELL DIVISION)

    ALLEN|Exercise EXERCISE-IV (Directions for Assertion & Reason questions)|19 Videos

  • CHEMICAL CO-ORDINATION AND INTEGRATION (ENDOCRINE SYSTEM)

    ALLEN|Exercise S|27 Videos

Similar Questions

Explore conceptually related problems

Assertion: Small disc-shaped structures at the surface of the centromeres are called kinetiochores. Reason: Kinetochores serve as the sites of attachement of spindle fibres to the centreomeres.

Centromere is also called

The chromosome showing L-shaped structure by the presence of centromere is termed as

Dumbell shaped structures in grasses is

Proteinaceous disc shaped structures associated with centromere of a chromosome are

The ballon shaped structure called tyloses

Star shaped sclereids are called

hair pin shaped structure in nephron is called

The factor related to structure of Earth's surface is called:

Structure which provide shape to chromosome is called

ALLEN-CELL CYCLE AND CELL DIVISION-EXERCISE
  1. In metaphase, the sister chromatids move towards the opposite poles of...

    Text Solution

    |

  2. Following are some events of mitotic cell division, select the correct...

    Text Solution

    |

  3. Small disc shaped structures at the surface of centromeres are called ...

    Text Solution

    |

  4. Each chromosome start to moves away from equatorial plate in telophase...

    Text Solution

    |

  5. M-phase is the largest phase of cell cycle because karyokinesis occur ...

    Text Solution

    |

  6. In telophase stage chromosomes decondense and lose their individuality...

    Text Solution

    |

  7. The homologous chromosomes separate, while sister chromatids remain as...

    Text Solution

    |

  8. Pairing of homologous chromosomes occurs in -

    Text Solution

    |

  9. Complex structure formed during synapsis is called

    Text Solution

    |

  10. Enzyme required for crossing over-

    Text Solution

    |

  11. Dissolution of synaptonemal complex occurs during

    Text Solution

    |

  12. Chiasmata or X-shaped structures become visible during

    Text Solution

    |

  13. terminalisation of chiasmata occurs during

    Text Solution

    |

  14. Which phase of prophase-I represents the transition to metaphase I ?

    Text Solution

    |

  15. Crossing over is the exchange of genetic material between chromatids ...

    Text Solution

    |

  16. In oocytes of some vertebrates, can last for months or years.

    Text Solution

    |

  17. During stage nuclear membrane and nucleolus reappear, cytokinesis foll...

    Text Solution

    |

  18. Bivalent chromosomes clearly appears as tetrad in

    Text Solution

    |

  19. A short phase may intervene between Meiosis I and Meiosis II. It is ca...

    Text Solution

    |

  20. Meiosis ensures the life cycle of sexually reproduction organisms.

    Text Solution

    |