Cell Cycle and Cell Division

Spindle fibres attach on to

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

In meiosis crossing over is initiated at

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

Select the correct option.

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Arrange the following events of meiosis in correct sequence
(i)  Crossing over
(ii)  Synapsis
(iii)  Terminalisation of chiasmata
(iv)  Disappearance of nucleolus

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?

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

During meiosis I, the chromosomes start pairing at

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

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.

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

During gamete formation, the enzyme recombinase participates during

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

Select the correct option with respect to mitosis.

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

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

During mitosis, ER and nucleolus begin to disappear at

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 cell cycle?

Synapsis occurs between

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

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 conveniently look into?

In the somatic cell cycle

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

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

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 : -

In which stage of cell cycle, DNA replication occurs?

Spindle fibre unite with which structure of chromosomes?