Events of Pro-phase 1 of Meiosis

It's the explanation of five sub-stages of Pro-phase 1 in meiosis, Leptotene, Zygotene, Pachytene, Diplotene and Daikinesis. 
1. In which stage of Pro-phase 1 synaptonemal complex is form or synapsis begins ?
2. What is occur in stage of Pachytene ?
3. In which stage of Pro-phase 1 chisma get visible ?
4. In which stage of Pro-phase 1 homologous chromosomes can be seen ?

Link to Video: 
Semester: 
5
Unit: 
1
Subject: 
MICROBIOLOGY
Paper: 
1