Cell Cycle and Cell Division Questions

Match the column A with column B and choose the correct option :

Bivalents align on equator during :-

Read the following statement carefully and identify the correct statement and select the correct option given below :- (A) DNA replication occurs in nucleus in eukaryotes (B) Gap 2 phase is also called post mitotic phase (C) Crossing over in pachyten

Given below are the two statements : one is labelled as Assertion (A) and other is labelled as Reason (R). Assertion (A) : Some cells in the adult animals donot appear to exhibit division (eg. heart cells) and many other cells divide only occasionall

Given below are the two statements : one is labelled as Assertion (A) and other is labelled as Reason (R). Assertion (A) : Meiosis is the mechanism by which conservation of specific chromosome number of each species is achieved across generation in s

The interphase nucleus has a loose and indistinct network of nucleoprotein fibre called as -

Which of the following does not occur in Anaphase-I but occurs in Anaphase-II :-

Identify the correct matched pair :-

Statement A : In animals, mitotic cell division usually occurs in the diploid somatic cells. Statement B : The plants can show mitotic divisions in both haploid and diploid cells.

Interphase is called the resting phase because

Consider the following statements regarding the cell cycle: A. The interphase lasts more than 95% of the duration of the cell cycle. B. In the S phase, the chromosome number in a cell doubles. C. The G2 phase corresponds to the interval between mitos

Go through the stage of mitosis in the cell shown below and choose the correct statement about it.

Mitosis is significant for(a) Growth (b) Healing and regeneration (c) Repair (d) Maintenance of cell size

A bivalent of meiosis-I consists of

Four different steps that occur during meiosis are given in the following list. (i) Complete separation of chromatids (ii) Pairing of homologous chromosomes (iii) Lining up of paired chromosomes on equator (iv) Crossing over between chromatids Select

From the statements given below, choose the incorrect option regarding the M-phase:

Identify the correct sequence of events that occur during the Prophase of mitosis: A. Centrioles begin to move towards opposite poles. B. Chromosomal material condenses to form compact mitotic chromosomes. C. Spindle fibers attach to kinetochores of

Which is correctly labelled?

The figure given below represents:

Match the following: List–I List–II------------------------------------------------(1) Mitosis in plants (a) Inner cheek cells(2) Meiosis in plants (b) Grasshopper testis(3) Mitosis in animals (c) In plants(4) Meiosis in animals (d) Onion root tip (g

The number of meiotic divisions required for the formation of 128 gametes in a man is:

The number of chromatids at metaphase of mitosis is:

The "thin threaded" stage refers to:

The short stage between the two meiotic divisions is called:

Recombination is completed by the end of:

During Anaphase I:

In which stage of Prophase I does "terminalisation" of chiasmata occur?

The X-shaped structures visible after the dissolution of the synaptonemal complex are:

Crossing over occurs during which stage of meiosis?

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

Synapsis (pairing of homologous chromosomes) occurs during:

The longest phase of Meiosis I is:

Meiosis involves ______ cycle(s) of DNA replication and ______ cycle(s) of nuclear division.

Meiosis reduces the chromosome number by:

Which of the following is NOT a significance of mitosis?

Syncytium is a condition where:

In plant cells, cytokinesis is achieved by the formation of:

Which of the following events does NOT occur during telophase?

Centromeres split and chromatids separate during:

The plane of alignment of chromosomes at metaphase is called the:

Small disc-shaped structures at the surface of the centromeres are called:

The best stage to study the morphology (shape and size) of chromosomes is:

The completion of prophase can be marked by:

In which stage of mitosis do the chromosomes appear to be made of two chromatids attached together at the centromere?

The first stage of karyokinesis in mitosis is:

Karyokinesis refers to the division of:

In animal cells, during S phase, DNA replication begins in the ______ and the centriole duplicates in the ______.

If the initial amount of DNA is denoted as 2C, then it increases to ______ during S phase.

In which phase of the cell cycle are the number of chromosomes and the amount of DNA respectively 2n and 4C?

DNA replication occurs during: