Four healthy people in their 20s got involved in injuries resulting in damage and death of a few cells. Which of the following cells are least likely to be replaced by new cells ?
1. Osteocytes
2. Liver cells
3. Neurons
4. Malpighian layer of the skin

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?

1. C-karyokinesis 2. D-synthetic phase 3. A-cytokinesis 4. B-metaphase

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