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Question
What is the importance of chiasma formation?
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Solution
Chiasma is the region where crossing-over takes place. By the formation of the chiasma, the exchange of genetic material between non-sister chromatids of the homologous chromosomes is accomplished. So, chiasma is the means of bringing about recombination of characters and thus variations in multicellular organisms
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RELATED QUESTIONS
Define the following:
Chiasmata
Choose the correct answer:
Crossing over is a feature of _______________
Choose the correct answer:
DNA replication takes place in ______________
Differentiate between
Chiasmata and crossing over.
Explain the Term Diplotene
Write the functional activity of the following structure:
Chiasmata
What is crossing over?
What is the bouquet stage?
Match List I with List II.
| List I (Sub Phases of Prophase I) |
List II (Specific characters) |
| A. Diakinesis | I. Synaptonemal complex formation |
| B. Pachytene | II. Completion of terminalisation of chiasmata |
| C. Zygotene | III. Chromosomes look like thin threads |
| D. Leptotene | IV. Appearance of recombination nodules |
Choose the correct answer from the options given below:
