Cell Cycle and Cell Division · Biology · NEET

Given below are two statements: Statement I: Failure of segregation of chromatids during cell cycle resulting in the gain or loss of whole set of chro...

Recombination between homologous chromosomes is completed by the end of

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Spindle fibers attach to kinetochores of chromosomes during

Given below are two statements: Statement I : Chromosomes become gradually visible under light microscope during leptotene stage. Statement II : The b...

Following are the stages of cell division : A. Gap 2 phase B. Cytokinesis C. Synthesis phase D. Karyokinesis E. Gap 1 phase Choose the correct sequenc...

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The dissolution of synaptonemal complex occurs during :

Doubling of the number of chromosomes can be achieved by disrupting mitotic cell division soon after :

During which stages of mitosis and meiosis, respectively does the centromere of each chromosome split ?

Which one of the following is the quiescent stage of cell cycle?

Select correct sequence of substages of Prophase-I of Meiotic division : (A) Zygotene (B) Pachytene (C) Diakinesis (D) Leptotene (E) Diploten...

The process of appearance of recombination nodules occurs at which sub stage of prophase I in meiosis?

Which of the following stages of meiosis involves division of centromere?

Among eukaryotes, replication of DNA takes place in :

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Select the correct statements. A. Tetrad formation is seen during Leptotene. B. During Anaphase, the centromeres split and chromatids separate. C. Ter...

Given below are two statements: Statement I : During G0 phase of cell cycle, the cell is metabolically inactive. Statement II : The centrosome undergo...

Which stage of meiosis can last for months or years in the oocytes of some vertebrates?

Identify the correct sequence of events during Prophase I of meiosis: (a) Synapsis of homologous chromosomes (b) Chromosomes become gradually visible ...

Bivalent or Tetrad formation is a characteristic feature observed during

With respect to metaphase, which of the following statements is incorrect?

Which one of the following never occurs during mitotic cell division?

The appearance of recombination nodules on homologous chromosomes during meiosis characterizes:

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Regarding Meiosis, which of the statements is incorrect?

Select the incorrect statement with reference to mitosis :

Which of the following stages of meiosis involves division of centromere?

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The fruit fly has 8 chromosomes (2n) in each cell. During interphase of Mitosis if the number of chromosomes at G1 phase is 8, what would be the numbe...

Which stage of meiotic prophase shows terminalisation of chiasmata as its distinctive feature?

The centriole undergoes duplication during :

Some dividing cells exit the cell cycle and enter vegetative inactive stage. This is called quiescent stage (G0). This process occurs at the end of...

Match the following with respect to meiosis (A) Zygotene      (i) Terminalization (B) Pachytene     (ii) ...

Dissolution of the synaptonemal complex occurs during

Identify the correct statement with regard to G1 phase (Gap 1) of interphase

The correct sequence of phases of cell cycle is :

Cells in G0 phase :

The stage during which separation of the paired homologous chromosomes begins is

Anaphase Promoting Complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cell. If APC is defective in a human cell, ...

Which of the following options gives the correct sequence of events during mitosis?

During cell growth, DNA synthesis takes place on

When cell has stalled DNA replication fork, which checkpoint should be predominantly activated?

Match the stages of meiosis in column I to their characteristic features in column II and select the correct option using the codes given below. .tg...

Spindle fibres attach on to

In meiosis crossing over is initiated at

Which of the following is not a characteristic feature during mitosis in somatic cells?

Arrange the following events of meiosis in correct sequence (i)  Crossing over (ii)  Synapsis (iii)  Terminalisation of...

A somatic cell that has just completed the S phase of its cell cycle, as compared to gamete of the same species, has

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During which phase(s) of cell cycle, amount of DNA in a cell remains at 4C level if the initial amount is denoted as 2C?

In 'S' phase of the cell cycle

The enzyme recombinase is required at which stage of meiosis?

During meiosis I, the chromosomes start pairing at

During the metaphase stage of mitosis, spindle fibres attach to chromosomes at

A stage of mitosis is shown in the diagram. Which stage is it and what are its characteristics? ...

The complex formed by a pair of synapsed homologous chromosomes is called

A stage in cell division is shown in the figure. Select the answer which gives correct identification of the stage with its characteristics. ...

Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres.

During gamete formation, the enzyme recombinase participates during

Given below is the representation of a certain event at a particular stage of a type of cell division. Which is this stage? ...

At metaphase, chromosomes are attached to the spindle fibres by their

Select the correct option with respect to mitosis.

During mitosis, ER and nucleolus begin to disappear at

Which stages of cell division do the following figures A and B represent respectively? ...

Synapsis occurs between

Given below is a schematic break-up of the phases/stages of cell cycle. Which one of the following is the correct indication of the stage/phase in the...

At what stage of the cell cycle are histone proteins synthesized in a eukaryotic cell?

In the somatic cell cycle

If you are provided with root-tips of onion in your class and are asked to count the chromosomes, which of the following stages can you most convenien...

Which one of the following precedes reformation of the nuclear envelope during M phase of the cell cycle?

Mitotic spindle is mainly composed of which protein?

Best material for the study of mitosis in laboratory is

If a diploid cell is treated with colchicine then it becomes : -

What is the reason of formation of embryoid from pollen grain in tissue culture medium ?

Spindle fibre unite with which structure of chromosomes?

In which stage of cell cycle, DNA replication occurs?