Cell Division (Chromosome Movements)
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Describe the structure of the mitotic spindle and the role of different types of fibres in chromosome movement. (UPSC 2019, 8 Marks, )
माइटोटिक स्पिंडल की संरचना का वर्णन करें और क्रोमोसोम की गति में विभिन्न प्रकार के रेशों की भूमिका। (Describe the structure of the mitotic spindle and the role of different types of fibres in chromosome movement.)Answer
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Describe the structure of the mitotic spindle and the role of different types of fibres in chromosome movement. (UPSC 2019, 8 Marks, )
माइटोटिक स्पिंडल की संरचना का वर्णन करें और गुणसूत्रों की गति में विभिन्न प्रकार के रेशों की भूमिका। (Describe the structure of the mitotic spindle and the role of different types of fibres in chromosome movement.)Answer
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Define endomitosis. Describe in detail the structure of a polytene chromosome highlighting the importance of puffs. (UPSC 2022, 15 Marks, )
एंडोमाइटोसिस को परिभाषित करें। पॉलीटीन क्रोमोसोम की संरचना का विस्तार से वर्णन करें, पफ्स के महत्व को उजागर करते हुए। (Define endomitosis. Describe in detail the structure of a polytene chromosome highlighting the importance of puffs.)Answer
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What is chromosome mutation? Describe various types of polyploidy with suitable examples. Add a note on phenotypic effects of polyploidy. (UPSC 2021, 20 Marks, )
क्रोमोसोम उत्परिवर्तन क्या है? उपयुक्त उदाहरणों के साथ पॉलीप्लॉइडी के विभिन्न प्रकारों का वर्णन करें। पॉलीप्लॉइडी के फेनोटाइपिक प्रभावों पर एक नोट जोड़ें। (What is chromosome mutation? Describe various types of polyploidy with suitable examples. Add a note on phenotypic effects of polyploidy.)Answer
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What is chromosome theory of linkage? Describe the methods for determination of linkage using suitable examples. (UPSC 2021, 15 Marks, )
लिंकज के गुणसूत्र सिद्धांत क्या है? उपयुक्त उदाहरणों का उपयोग करके लिंकज के निर्धारण की विधियों का वर्णन करें। (What is chromosome theory of linkage? Describe the methods for determination of linkage using suitable examples.)Answer
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Draw the structure of a microtubule and explain its role in chromosomal movements during cell division. (UPSC 2022, 10 Marks, )
माइक्रोट्यूब्यूल की संरचना बनाएं और कोशिका विभाजन के दौरान गुणसूत्रीय गतियों में इसकी भूमिका समझाएं। (Draw the structure of a microtubule and explain its role in chromosomal movements during cell division.)Answer
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Diagrammatically describe prophase stages and differentiate between anaphase I and II of meiotic cell division. (UPSC 2023, 15 Marks, )
आरेखीय रूप से प्रोफेज चरणों का वर्णन करें और मियोटिक कोशिका विभाजन के एनाफेज I और II के बीच अंतर करें। (Diagrammatically describe prophase stages and differentiate between anaphase I and II of meiotic cell division.)Answer
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