Match the stage of meiosis in column I to their characteristic features in column II and select the correct option using the codes given below 
  Column l                                                 Column ll
A. pachytene                                1. pairing of homologous chromosomes

B. Metaphase-l                             2. Terminalisation of chiasmata

C. Diakinesis                                3. Crossing-over takes place
  
D. Zygotene                                 4. Chromosomes align at equatorial plate 

The correct option:

      A      B        C        D 
(1)  3      4        2        1
(2)  1      4        2        3
(3)  2      4        3        1
(4)  4      3        2       1   

Which of the following is not a characteristic feature during mitosis in somatic cells
(1) Disappearance of nucleolus

(2) Chromosome movement

(3) Synapsis

(4) Spindle fibres

In meiosis crossing over is initiated at 

1. leptotene

2. Zygotene

3. diplotene

4. pachytene