NEET2020BotanyCell Cycle and Cell DivisionActual
Match the following with respect to meiosis (a) Zygotene (i) Terminalization (b) Pachytene (ii) Chiasmata (c) Diplotene (iii) Crossing over (d) Diakinesis (iv) Synapsis Select the correct option from the following
Options
- A(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
- B(a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)
- C(a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
- D(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
Correct answer
A. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
Step-by-step solution
Prophase I: Prophase in meiosis-I is typically longer and more complex than the prophase in meiosis II. Prophase I is subdivided into five phases, viz. Leptotene, Zygotene, Pachytene, Diplotene and Diakinesis. Leptotene: • During this stage, the chromosomes become gradually visible under the light microscope. The compaction of chromosomes continues throughout this phase. Zygotene: • Chromosomes start pairing together. This process is called synapsis. The paired chromosomes are called homologous chromosome