Cell Cycle and Cell Division Questions and Answers Part-9

1. Before undergoing meiosis, the amount of DNA of a cell
a) Halves
b) Doubles
c) Remains the same
d) Quadruples

Answer: b
Explanation: Doubles

2. Which of the following represents the correct order in Prophase I?
a) Zygotene, diplotene, pachytene, leptotene, diakinesis
b) Diakinesis, diplotene, leptotene, pachytene, zygotene
c) Leptotene, zygotene, pachytene, diplotene, diakinesis
d) Pachytene, leptotene, zygotene, diplotene, diakinesis

Answer: c
Explanation: Leptotene, zygotene, pachytene, diplotene, diakinesis

3. In which stage of meiosis, the chromosome is thin, long and thread-like?
a) Leptotene
b) Zygotene
c) Pachytene
d) Diakinesis

Answer: a
Explanation: Leptotene

4. Synaptonemal complex has a role in
a) Chromosome pairing
b) Chromosome movement
c) Chromosome segregation
d)Chromosome organization

Answer: a
Explanation: Synaptonemal complex has a role in chromosome pairing

5. The synaptonemal complex is formed during
a) Cytokinesis
b) Amitosis
c) Mitosis
d) Meiosis

Answer: d
Explanation: The synaptonemal complex is formed during meiosis

6. Bivalents are formed during
a) Diplotene
b) Pachytene
c) Zygotene
d) Leptotene

Answer: c
Explanation: Bivalents are formed during zygotene

7. Tetrad is made of
a) Four non-homologous chromatids
b) Four non-homologous chromosomes
c) Four homologous chromosomes with four chromatids
d) Two homologous chromosomes and each with two chromatids

Answer: d
Explanation: Tetrad is made of two homologous chromosomes and each with two chromatids

8. The exchange of paternal and maternal chromosome material during cell division is
a) Dyad formation
b) Crossing over
c) Synapsis
d) Bivalent formation

Answer: b
Explanation: Crossing over

9. Transfer of genes from one chromosome to another and vice versa during synapsis is called
a) Crossing over
b) Exchange
c) Chiasmata
d) Translocation

Answer: a
Explanation: Transfer of genes from one chromosome to another and vice versa during synapsis is called Crossing over

10. Repulsion of homologous chromosomes takes place in
a) Diplotene
b) Zygotene
c) Diakinesis
d) Leptotene

Answer: a
Explanation: Repulsion of homologous chromosomes takes place in diplotene