Zygotene

Q. Study the following column and choose the correct option.

A.	Initiation of spindle fibres	1.	Anaphase-I
B.	Synthesis of RNA and protein	2.	Zygotene
C.	Action of endonuclease	3.	G1-phase
D.	Movement of chromatids towards opposite poles	4.	Pachytene
		5.	Anaphase-II

1. b
2. c
3. d
4. a

Q.

Identify the stages of Prophase I, going from left to right, from the images below.

1. Zygotene, Pachytene, Diplotene, Diakinesis, Leptotene.

2. Diplotene, Diakinesis, Leptotene, Zygotene, Pachytene.

3. Leptotene, Zygotene, Pachytene, Diplotene, Diakinesis.

4. Pachytene, Diplotene, Diakinesis, Pachytene, Diplotene.

Q.

Which of the following is not a characteristic feature of mitosis in somatic cells?

1. Synapsis

2. Formation of spindle fibres

3. Disappearance of nucleolus

4. Chromosome movement

Q.

Pairing of homologous chromosomes is called:

1. Tetrad

2. Crossing over

3. Synapsis

4. Terminalisation