Synapsis occurs between
1. mRNA and ribosomes
2. Spindle fibers and centromere
3. Two homologous chromosomes
4. A male and a female gamete

During mitosis, endoplasmic reticulum and nucleolus begin to disappear at:

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

1. Metaphase - Telophase
2. Telophase - Metaphase
3. Late anaphase – Prophase
4. Prophase – Anaphase

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

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 the correct identification of the stage with its characteristics.

The enzyme recombinase is required at which stage of meiosis ?

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 ?

1. G₀ and G₁
2. G₁ and S
3. Only G₂
4. G₂ and M

In S phase of the cell cycle
1. Amount of DNA doubles in each cell
2. Amount of DNA remains same in each cell
3. Chromosome number increases
4. Amount of DNA is reduced to half in each cell

Arrange the following events of meiosis in correct sequence
(a) Crossing over
(b) Synapsis
(c) Terminalisation of chiasmata
(d) Disappearance of nucleolus