1. During meiosis, crossing over between two non-sister chromatids occurs at
A) Leptotene
B) Zygotene
C) Pachytene
D) Diplotene
2. If a diploid cell contains six chromosomes, how many
possible random arrangements of homologous could occur during Metaphase- I
A) 4 B) 8 C) 6 D) 64
3. Cell cycle check points form a mechanism to ensure
A) Proper DNA replication
B) Proper chromosome separation
C) Proper completion of each stage in cell cycle
D) Proper termination of cell cycle
4. When a cell with 2n = 60 chromosomes undergoes meiosis,
each of the four resulting cells has chromosomes
A) 30 B) 60 C) 40 D) 10
5. An animal has a diploid number of 8 chromosomes. During
meiosis how many chromatids are present in metaphase of second meiotic stage?
A) 16 B) 8 C) 4 D) 32
6. Recombination nodules are present in
A) Kinetochore
B) Centriole
C) Synaptonemal complex
D) Nucleolar organizing region
7. Hayflick Limit is:
A) The number of meiosis occurs during the sexual life cycle of all eukaryotes
B) The number of mitosis a cell is capable of undergoing in tissue culture before it stops dividing
C) The number of mitosis spindles involved in chromosome separation
D) The number of kinetochores on each chromosome during metaphase
8. Match Group I with Group II
Group I Group II
a) p53 1. GTPase
b) RB1 2. Transcription factor
c) NF1 3. DNA repair
d) BRCA1 and BRCA2 4. Cell cycle checkpoint
A) a-1, b-3, c-2, d-4
B) a-4, b-1, c-3, d-2
C) a-2, b-4, c-1, d-3
D) a-2, b-4, c-3, d-1
9. The non sister chromatids twist around and exchange segments with each other in
A) Leptotene
B) Pachytene
C) Zygotene
D) Diplotene
10. Continuous variations are attributed to meiosis through
A) Polyploidy
B) Crossing over
C) Mutation
D) All of these
Answers:
1. C) Pachytene
2. B) 8
3. C) Proper completion of each stage in cell cycle
4. A) 30
5. A) 16
6. C) Synaptonemal complex
7. B) The number of mitosis a cell is capable of undergoing in tissue culture before it stops dividing
8. C) a-2, b-4, c-1, d-3
9. B) Pachytene
10. B) Crossing over
