NEET UG – Biology Base(Cell Cycle)

Cell cycle can remain arrest in which of the following stages?

The centrosome duplicates during the

The number of DNA in chromosome at G2 stage of cell cycle is

How do the daughter cells at the end of mitosis and cytokinesis, compare with their parent cell when it was in G1 of the cell cycle?

At ………. phase of the cell cycle, DNA polymerase activity is at its highest.

The term ‘mitosis’ was introduced by

A plant cell has 12 chromosomes at the end of mitosis. How many chromosomes would it have in the G2 phase of its next cell cycle?

Which specific protein is formed in G2−phase ?

The G2 phase of the cell cycle is signified by the synthesis of

DNA replication is found in

The synthesis of proteins for formation of spindle fibres takes place in

During the G1 phase of cell division

A set of genetic material for both daughter cells are provided by the replication of chromosomes at

When energy is stored and cell undergoes differentiation in adverse condition, the stage is called as

Which is the longest phase of cell cycle?

Which of the following phase is a pre-DNA synthesis phase?

The number of chromosomes in a somatic cell, of a diploid organism (with original of 10 pairs), after DNA replication and before mitosis would be

Histone protein synthesis occurs during

How many divisions must occur in a cell of root tip to form 128 cells?

Which division is characteristic of cartilage cells, meganucleus of Paramecium and foetal membranes?

Which is synthesized in G1 phase?

The two successive cell division occurs in the process of

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

Progression of cell cycle is regulated by the concentration of which type of molecule?

Centrosomes occurs in

In cell cycle, during interphase,

Decision of G0-phase occurs

Cell plate which appears during cytokinesis, ultimately transforms in

Which of the following stages marks the reverse effect of prophase and prometaphase?

Phragmoplast is precursor of

Preparation phase of mitosis is

The nuclear membrane disappears in

Which one of the following forms the spindle apparatus during cell division?

V, J and L shaped chromosome occur in which of the following?

Which of the following structure will not be common to mitotic cell of a higher plant?

A multinucleate cell is called as

In which order, cytokinesis occurs in plants?

The movement of chromosomes to the opposite poles during cell division takes place

In which stage of cell division chromosomes are most condensed?

In which of the following division of centromere occurs?

The division of nucleus is indirect in

Germ cells in vertebrate gonads are produced by

In cell cycle, changes of which stage are not visible under microscope?

The role of mitosis is not merely, to divide a cell into two daughter cells but to ensure genetic continuity, from one cell generation to another cell generation. The mechanism ensuring genetic continuity is

Which division maintains genetic similarity?

Colchicine interferes with

Cyclin is associated with

Cell plate is referred as

The stain for cell division is

Dinomitosis occurs in which of the following?

Which of the following is the most primitive type of mitosis?

When the prophase chromosome are stained with acetocarmine, they take differential staining. This phenomenon is called as

Colchicine is a

After mitotic cell division, a female human cell will have

In some organisms, karyokinesis is not followed by cytokinesis as a result of which, multinucleate condition arises leading to the formation of syncytium. The perfect example for this is

Spindle fibres attach on to

What is not seen during mitosis in somatic cells?

Kinetin (cytokinin) increase the rate of mitosis by reducing the duration of

Two chromatids of metaphase chromosome represents which of the following?

Which of the following stage is affected by colchicine?

There are 8 chromosomes in the female gamete of plant P. How many chromosomes are there in each leaf cell of plant P?

The chromosome of ………. is one of the main tools in cancer studies.

The centromere does not divide till the end of metaphase. This is important because centromere

The lining up of homologous chromosomes, in pairs takes place during

Which of the following not occurs in anaphase I but occurs in anaphase II?

Chromosome syndesis or bivalent formation occurs in

Visible expression of the genetic phenomenon of crossing over is called

The thick-thread stage occurs in

Name the stage in meiosis when there are two cells each with sister chromatids aligned at the equator of the spindle.

During which of the following stage of meiosis, synaptonemal complex is formed?

All of the following occurs in anaphase I, except

Centromere in metaphase stage of meiosis is important because it helps in

What is the gap between meiosis I and II is called?

Meiosis occurs in

Crossing over of chromosomes during meiosis leads to

Number of spore mother cells required to produce 64 spores is

The separation of sister chromatids takes place during

When synapsis is complete all along the chromosome, the cell is said to have entered a stage called as

In meiosis, the daughter cells are not similar to that of parent because of

If the n = 16 in plant cell than what is possible in metaphase I of meiosis?

The major importance of meiosis lies in

The terminalization process starts in

During meiosis there is

Necessity of meiosis II is

The separation of homologous chromosomes during anaphase I is called as

The number of chromosome groups at the equatorial plate in metaphase I of meiosis, in a plant with diploid (2n) chromosome number equal to 50 shall be

In an eukaryotice cell number of chromosomes are 36. After meiosis I and II, it results into 4 daughter cells. Then each daughter cell will have how many chromosomes?

Genetic content of a cell reduces to half during

The non-disjunction, in meiosis may result is extra copy of a chromosome in a sperm cell. During which phase the above phenomenon may occur?

In which of the following cells first meiotic division is observed.

Identify the substage of prophase I of meiosis during which synapsis takes place.

During meiosis, the alleles of the parental pair separate or segregate from each other. How many allele(s) are then transmitted to a gamete?

Homologous chromosomes shows maximum attraction during

In plants, meiosis can be observed in

Which of the following is the shortest phase of meiosis?

In tetrad, the number of non-cross over chromatids is normally

In two spindle bodies in metaphase II, chromosome at equator have _______ and  _______

Which of the stages of the cell cycle involves contraction of spindle fibres?

_______ develop between the homologous chromosomes during zygotene.

The most fastest stage of cell division is