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Multiple Choice Question

In which sub-stage of Prophase-I of Meiosis does "Crossing over" between homologous chromosomes occur?अर्धसूत्रीविभाजन (Meiosis) के प्रोफेज-I की किस उप-अवस्था में समजात गुणसूत्रों के बीच "क्रॉसिंग ओवर" (Crossing over) होता है?

  • A
    Leptotene
    लेप्टोटीन
  • B
    Zygotene
    जाइगोटीन
  • C
    Pachytene
    पैकीटीन (Pachytene)
  • D
    Diplotene
    डिप्लोटीन
Explanation:
Crossing over (exchange of genetic material) occurs during the Pachytene stage, mediated by an enzyme complex called recombinase.
क्रॉसिंग ओवर (आनुवंशिक सामग्री का आदान-प्रदान) पैकीटीन अवस्था के दौरान होता है, जो रिकॉम्बिनेस नामक एंजाइम कॉम्प्लेक्स द्वारा मध्यस्थता करता है।

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This question belongs to the set "UKSSSC PPA (LEO) – Biology Domain | Mock Test Set 1". Click below to read detailed notes and attempt the full quiz.

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