Home
Class 12
BIOLOGY
It is important that the centromere does...

It is important that the centromere does not divide until the end of metaphase because it
(a) contains the genes that control prophase
(b) holds the replicated DNA molecules together
(c) is connected to the nuclear membrane
(d) produces the spindle fibres

A

Is connected with nuclear envelope

B

Produces spindle fibres

C

Contains genes that control prophase and metaphase

D

Holds the replicated DNAs together.

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • CELL CYCLE (CELL DIVISION)

    DINESH PUBLICATION ENGLISH|Exercise REVISION QUESTIONS|267 Videos
  • CELL CYCLE (CELL DIVISION)

    DINESH PUBLICATION ENGLISH|Exercise CHECK YOUR GRASP|18 Videos
  • BIOLOGICAL CLASSIFICATION

    DINESH PUBLICATION ENGLISH|Exercise CYC|13 Videos
  • CHEMICAL COORDINATION AND REGULATION

    DINESH PUBLICATION ENGLISH|Exercise Brain Teasers-V|114 Videos

Similar Questions

Explore conceptually related problems

Nuclear membrane and nucleoli are distinctly seen in (a) Prophase (b) Metaphase (c) Anaphase (d) Interphase

Read the following statements and find out the incorrect statements. a. Anatomically, the ear can be divided into three major sections called the outer ear, the middle ear and the inner ear. b. The outer ear consists of the pinna and external auditory meatus (canal). c. The tympanic membrane (ear drum ) is composed of connective tissue covered with mucus membrane outside and with skin inside. d. The ear ossicles reduces the efficiency of transmission of sound waves to the inner ear. e. The pinna collects the vibrations in the air which produce sound.

Which of the following statements is associated with A. prophase, B. metaphase, C. anaphase, D. telophase, and E. interphase of mitosis? The nuclear membrane reappears.

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 statements does not hold true for restriction enzyme? (a) It recongnises a palindromic nucleotide sequence (b) It is an endonuclease. (c) It is isolated from viruses (d) It produces the same kind of sticky ends in different DNA molecules

The characterisitic of blue green algea is Or Blue- green algae are called cynobacteria because (a) DNA without histone (b) Nucleus absent (c) Nuclear membrane absent (d) All of the above

Read the following statements and select the correct ones. (i) Electrophoresis is a technique used for the separation of molecules based on their size and charge. (ii) Plasmids are extra-chromosomal, self-replicating, usually circular, double stranded DNA molecules found naturally in many bacteria and also in some yeast,. (iii) It is not advisable to use an exonuclease enzyme while producing a recombinant DNA molecule. (iv) In EcoRl, the roman numberal I indicates that it was the first enzyme isolated from E.coli A) (i) and (ii) B) (iii) and (iv) C) (i),(ii) and (iv) D) (i),(ii),(iii) and (iv)

Select the wrong statement (a) Presence of chromogenic substrate gives blue color colonies if the plasmid in the bacteria does not have an insert (b) Retroviruses in animals have the ability to transform normal cells into cancerous cells (c) In microinjection, cells are bombarded with high velocity microparticles of gold or tungsten coated with DNA (d) Since DNA is a hydrophilic molecule it cannot pass through cell membranes

The most important use of studying nuclear fission and fusion process was to harness nuclear energy for useful purpose of humanity. Nuclear reactor is the machine designed to harness nuclear energy to electricity. The basic principle involved is fission of uranium to krypton and barium by slow moving neutrons as in following ""_(0)n^(1)+""_(92)^(235)Uto""_(32)^(96)Kr+""_(56)^(141)Ba+3_(0)n^(1)+Q(200MeV) reaction: But the difficulty is that one neutron striking with ""_(92)^(235)U produces three (2.6 on an average) neutrons which can cause further fission The neutron intensity available for further fission is controlled by measuring reproduction factor defined as the average number of neutrons from each fission the causes further fission. Maximum value of K 2.6. For optimum operation of nuclear reactor, the value of Kis mentioned in Column-1 for various stages in Columu-Il match the correct columns : {:("Column-I","Column-II"),((A)K=1,(p)"Uncontrolled chain reaction"),((B)Klt1,(q)"Critical"),((C)Kge1,(r)"Sub critical"),((D)K~~25,(s)"Super critical"):}

Which of the following statements is associated with A. prophase, B. metaphase, C. anaphase, D. telophase, and E. interphase of mitosis? Centromere divides into two.