Q8. What is meant by the term ‘species’? Discuss its meaning in higher plants and animals and in bacteria.
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Multiple Choice Question
During which sub-stage of Prophase-I of Meiosis does the dissolution of the synaptonemal complex occur, leading to the visualization of X-shaped structures known as chiasmata?अर्धसूत्रीविभाजन-I के पूर्वावस्था-I (Prophase-I) की किस उप-अवस्था के दौरान सिनेप्टोनीमल कॉम्प्लेक्स का विघटन होता है, जिसके परिणामस्वरूप 'X' आकार की संरचनाएं (काएज्मेटा) स्पष्ट दिखाई देती हैं?
Explanation:
Dissolution of the synaptonemal complex occurs during the Diplotene stage, leaving homologous chromosomes attached only at the points of crossing over, visible as X-shaped chiasmata.
डिप्लोटीन अवस्था में सिनेप्टोनीमल कॉम्प्लेक्स का विघटन शुरू होता है और समजात गुणसूत्र अलग होने लगते हैं, केवल जीन-विनिमय स्थलों पर जुड़े रहते हैं जिन्हें काएज्मेटा (X-आकार) कहा जाता है।
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