The correct sequence in cell cycle is ______.

(a)

S-M-G1-G2

(b)

S-G1-G2-M

(c)

G1-S-G2-M

(d)

M-G-G2-S

If mitotic division is restricted in G1 phase of the cell cycle then the condition is known as _____.

(a)

S Phase

(b)

G2 Phase

(c)

M Phase

(d)

G0 Phase

Anaphase promoting complex APC is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in human cell, which of the following is expected to occur?

(a)

Chromosomes will be fragmented

(b)

Chromosomes will not condense

(c)

Chromosomes will not segregate

(d)

Recombination of Chromosomes will occur

In S phase of the cell cycle ______.

(a)

Amount of DNA doubles in each cell

(b)

Amount of DNA remains same in each cell

(c)

Chromosome number is increased

(d)

Amount of DNA is reduced to half in each cell

Centromere is required for ______.

(a)

transcription

(b)

crossing over

(c)

cytoplasmic cleavage

(d)

movement of chromosome towards pole

The paring of homologous Chromosomes on meiosis is known as _____.

(a)

Bivalent

(b)

Synapsis

(c)

Disjunction

(d)

Synergids

Anastral mitosis is the characteristic feature of _________

(a)

Lower animals

(b)

Higher animals

(c)

Higher plants

(d)

All living organisms

Write any three significance of mitosis.

Differentiate between mitosis and meiosis.

Given an account of G₀ phase.

Differentiate cytokinesis in plant cells and animal cells.

Write about Pachytene and Diplotene of Prophase I.