CBSE
Multiple Choice QuestionsSpindle fibres of mitotic cell are made up of
tubulin
actin
myosin
collagen
During meiosis crossing over occurs at
pachytene
zygotene
leptotene
diakinesis
In synapsis two homologous chromosomes are connected at
centromeres
chromomeres
telomeres
none of these
Match the item in column I with those in column II and the choose the correct answer.
| Column I | Column II |
| A. Mitosis | 1. Occurs in diploid cells only |
| B. Meiosis | 2. Occurs in both haploid and diploid cells |
| 3. Daughter and parent cells have same chromosome numbers | |
| 4. Synapsis of homologous chromosomes. |
A- 1; B- 2
A- 2; B- 3
A- 3; B- 4
A- 4; B- 1
During meiosis crossing over occurs between which part of homologous chromosome ?
Sister chromatids
Non-sister chromatids
Genes
Alleles
The stage of cell cycle when cell has undergone differentiation is :
G0
G1
G3
G4
Which of the followings does not occur in the interphase of eukaryotic cell division?
Increase of ATP synthesis
Increase of DNA synthesis
Increase of RNA synthesis
Reduction in cell size
In cell cycle, during, which phase chromosomes are arranged in equatorial plate ?
Metaphase
Anaphase
Telophase
Prophase
Stages in proper sequence of prophase- I are
zygotene, leptotene, pachytene, diakinesis
leptotene, zygotene, pachytene, diplotene and diakinesis
eptotene, pachytene, zygotene, diakinesis and diplotene
diplotene, diakinesis, pachytene, zygotene and leptotene
During mitosis nuclear membrane disappears at
early prophase
late prophase
metaphase
anaphase
