Home
Class 12
BIOLOGY
Kinetochores of a chromosome are...

Kinetochores of a chromosome are

A

Disc shaped proteinaceous structure present at the centromere

B

Present near secondary constriction

C

Distributed all over the length of the chromosomes

D

Beaded string like structures

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • Mock test 29 Zoology

    AAKASH INSTITUTE|Exercise EXAMPLE|17 Videos
  • Mock test 31

    AAKASH INSTITUTE|Exercise EXAMPLE|10 Videos

Similar Questions

Explore conceptually related problems

Kinetochore is

Kinetochore is

Attachment of spindle fibres to kinetochores of chromosomes becomes evident in:

Answer the following questions regarding the events carried out in the labelled parts of the ab ove given diagram. (1) DNA synthesis occurs in (2) Condenstaion of chromosomal material takes place in (3) Attachement of spindle fibres to kinetochores of chromosomes during (4) Initiation of the assembly of mitotic spindle during (5). Splitting of centromere and separation of chromatids in (6) Movement of chromatids to opposite poles during (7) Reformation of nucleolus, Golgi complex and ER occurs in (8) Alignment of chromosomes along metaphase plate during (9) During of cytoplasm during (10) Preparation of cell division takes place during.

Read the following statement and choose the correct option spindle fibres get attached to the kinetochore of the chromosomes during metaphase. At the end of prophase cells do not show golgi complex, endoplasmic reticulum, nucleolus and the nuclear envelope. At anaphase centromere splits but chromatids do not separate.

Which of the following events takes place during anaphase stage of mitosis I. Spindle fibres attach to kinetochores of chromosomes II. Centromeres split and chromatids separate III. Chromatids move to opposite poles IV. Nucleolous, Golgi complex and E.R. reform

The events shown below occur during different phases - A. Centromere splits, chromatids separate and move to opposite poles, chromatids are now called chromosome B. Chromosomes cluster at opposite poles, decondensation of chromosome, reappearance of NM, GB and ER. C. Chromosomal replication D. Kinetochores attach to spindle fibres and chromosome are arranged at equatorial plate E. Condensation of chromosomal materials Which or the following correctly identifies each of the phases described-

AAKASH INSTITUTE-MOCK TEST 3-EXAMPLE
  1. Read the following statement and choose the correct option spindle f...

    Text Solution

    |

  2. Choose the incorrect ones w.r.t. metaphase. Each chromosome with two...

    Text Solution

    |

  3. Which of the following is not a significance of mitosis?

    Text Solution

    |

  4. If karyokinesis is not followed by (i)/, it will lead to formation of ...

    Text Solution

    |

  5. Kinetochores of a chromosome are

    Text Solution

    |

  6. Nuclear envelope assembles around the chromosome clusters at

    Text Solution

    |

  7. How many tetrads are visible in human meiocyte?

    Text Solution

    |

  8. Diakinesis is marked by

    Text Solution

    |

  9. DNA content in a meiocyte at G2 phase is 40 pg. What would be the DNA ...

    Text Solution

    |

  10. Read the following statements and select the correct option stating wh...

    Text Solution

    |

  11. Zygotene is characterized by Pairing of homologous chromosomes App...

    Text Solution

    |

  12. Splitting of centromere of each chomosome which was holding sister chr...

    Text Solution

    |

  13. In oocytes of some vertebrates, diplotene lasts for months or years. I...

    Text Solution

    |

  14. Recombination nodule is seen in stage

    Text Solution

    |

  15. Interkinesis differs from interphase in absence of

    Text Solution

    |

  16. Calculate the total number of meiotic division required to produce 56 ...

    Text Solution

    |

  17. Chiasmata or X-shaped structures become visible during

    Text Solution

    |

  18. A bivalent of prophase I represent

    Text Solution

    |

  19. A short live phase between meiosis II and II is

    Text Solution

    |

  20. Which of the following is not a significance of meiosis ?

    Text Solution

    |