71.

Cells in G₀ phase of cell cycle

• exit cell cycle

• enter cell cycle

• suspend cell cycle

• terminate cell cycle

Longest phase of meiosis

• prophase- I

• prophase- II

• anaphase- I

• metaphase- II

In which stage of the first meiotic division two sister chromatids are formed?

• Leptotene

• Zygotene

• Pachytene

• Diplotene

The correct sequence of different phases of cell cycle is

• S - G₁ - G₂ - M

• G₁ - S - G₂ - M

• G₂ - S - G₁ - M

• G₁ - G₂ - S - M

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

• equatorial plate

• kinetochore

• bivalent

• axoneme

Meiosis takes place in

• Meiocyte

• Conidia

• Gemmule

• Megaspore

A stage in cell division is shown in the figure. Select the answer which gives correct identification of the stage with its characteristics

• Telophase - Nuclear envelope reforms, Golgi complex reforms

• Late anaphase - Chromosomes move away from equatorial plate, Golgi complex not present

• Cytokinesis - Cell plate formed, mitochondria distributed between two daughter cells

• Telophase - Endoplasmic reticulum and nucleolus not reformed yet

Select the correct statement related to mitosis.

• Amount of DNA in the parent cell is first halved and then distributed into two daughter cells

• Amount of DNA in the parent cell is first doubled and then distributed into two daughter cells

• Amount of DNA in the parent cell is first halved and then distributed into four daughter cells

• Amount of DNA in the parent cell is first doubled and then distributed into four daughter cells

Proteins helping in kinetocore formation of yeast are

• CBF2 and Kar³ P

• CBF2 and CBF3

• CBF3 and Kar³ P

• CBF2, CBF3 and Kar³ P

Which one of the following is wrong for meiosis?

• It leads to formation of sister chromatids

• It occurs in diploid cell

• It occurs in haploid cell

• It occurs by splitting of centromeres and separation of sister chromatids