a)Bacteria
b)plants
c)fungi
d)animals
2. In
meiosis, all the following statements are true except
a) separation of
homologous chromosome in meiosis I
b)prophase is
comparatively longer and may take days
c)each bi valent
has four chromatids and 2 centromeres
d)centromeres
divides only during anaphase I
3. Crossing
over takes place only in
a)meiosis only
b)mitosis only
c)both mitosis and
meiosis
d)none of the
above
4. The following statements are true except
a) chromosomes are
single stranded in anaphase of mitosis
b) chromosomes are
single stranded in anaphase I of meiosis
c) chromosomes are
single stranded in anaphase II of meiosis
d)sister
chromatids are separated during anaphase of mitosis
5.Centromeric division takes place during
a) metaphase of
mitosis
b)anaphase I of
meiosis
c)telophase of
mitosis
d)anaphase II of
meiosis
6. A cell at G1 of interphase has 8
chromososmes. The number of chromosomes at the anaphase of mitosis will be
a)4
b)8
c)12
d)16
7. A
cell at G1 of interphase has 8 chromososmes. The number of chromatids at the
metaphase of mitosis will be
a)4
b)8
c)12
d)16
8. A cell at G1 of interphase has 8
chromososmes. The number of chromatids at the metaphase I of meiosis will be
a)4
b)8
c)12
d)16
9. A cell at G1 of interphase has 8
chromososmes. The number of chromosomes at the metaphase II of meiosis will be
a)4
b)8
c)12
d)16
10. Exchange of segments between sister
chromatids of non homologous chromosome is
a) crossing over
b)transition
c)transversion
d)translocation
11. Which one of the following is not a
reason for aneuploidy
a) Robertsonian
translocation
b) nondisjuction
c) loss of
centromere
d)loss of telomere
12. The most variable phase in cell cycle
a) G1
b)S
c)G2
d)M
13. S phase is characterised by
a)
DNA synthesis only
b)histone
synthesis only
c)
both DNA and histone synthesis
d)none
of the above
14. Which of the following statement is
true
a) The
concentration of cyclins and CDKs varies throughout cell cycle
b)The
concentration of CDKs and cyclins remains constant throughout cell cycle
c) The
concentration of cyclins remains constant throughout cell cycle
d) The
concentration of cyclins varies throughout cell cycle
15. Cyclins and CDKs in M phase
a) CDK4 + cyclin D
b) CDK 2+ cyclin E
c) CDK2+cyclinA
d) CDK 1 +cyclin B/A
16. Cyclin B is
involved in the regulation of G2/M checkpoint. What would be the change in the
amount of Cyclin B during mitosis
a)Concentration of cyclin B increases
b) Concentration of cyclin B decreases
c)Concentration of
cyclin B remains same
d) concentration
of cyclin B gradually decreases
17.Growth of cell occurs during which phase
of cell cycle?
a) Interphase
b)metaphase
c)anaphase
d)telophase
18. The threadlike structures that radiates
from each centromere by the end of prophase are
a) polar
microtubules
b) aster
microtububules
c) spindle
microtubule
d) kinetochore
microtubule
19. How many different types of gametes
could be produced by an individual with the arbitrary genotype of FFggHHIiJj
a)2
b)4
c)6
d)8
20.
Non-disjunction in meiosis II may result in the formation of
a)
n+1, n-1 and n gametes
b)
n+1, n-1 gametes
c)n+2,
n-1 and n gametes
d)n+1
gametes only
21.Colchicine arrest cell division during
which one of the phases of the cell cycle?
a)G1
b)S
c)Early prophase
d)Metaphase
Answers:
1. c)fungi
2. d)centromeres divides only during
anaphase I
3. c) both mitosis and meiosis
4. b) chromosomes are single stranded in
anaphase I of meiosis
5. d)anaphase II of meiosis
6. c) 16
7. d) 16
8. d) 16
9. a)4
10. d)translocation
11. d)loss of telomere
12. a)G1
13. c) both DNA and histone
synthesis
14. d) The concentration of
cyclins varies throughout cell cycle
15. d) CDK 1 +cyclin B/A
16. d) concentration of cyclin B gradually decreases
17. a) interphase
18. d) kinetochore microtubule
19. b)4
20. a) n+1, n-1 and n gametes
21. d) Metaphase