1. Tardigrade
  2. Question
  3. Biology
  4. Find out correctly matched pairs and choose the correct option: A. Leptotene - The chromosomes become visible B. Zygotene - Pairing of homologous chromosomes C. Diplotene - Bivalent chromosomes appear as tetrads D. Diakinesis - Terminalisation of chiasmata takes place

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. Find out correctly matched pairs and choose the correct option:
A. Leptotene - The chromosomes become visible
B. Zygotene - Pairing of homologous chromosomes
C. Diplotene - Bivalent chromosomes appear as tetrads
D. Diakinesis - Terminalisation of chiasmata takes place

Cell Cycle and Cell Division

Solution:

Prophase I of meiosis consists of 5 stages: leptotene, zygotene, pachytene, diplotene and diakinesis. Leptotene is the initial stage of prophase. During this, chromosomes become gradually visible under the light microscope due to condensation. In zygotene, pairing of homologous chromosomes occur by formation of synaptonemal complexes. Next, pachytene is characterized by occurrence of crossing over. Bivalent chromosomes now clearly appear as tetrads. Diplotene follows pachytene and involves dissolution of synaptonemal complex. Terminalisation of chiasmata is observed in diakinesis.