Question
उत्परिवर्तनों के आण्विक आधार को विस्तार से समझाइए।
Answer :
Word Count : 465
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उत्परिवर्तन, जिसे म्यूटेशन भी कहा जाता है, आनुवंशिक सामग्री में स्थायी बदलाव होते हैं जो किसी जीव के जीन या क्रोमोसोम में घटित होते हैं। उत्परिवर्तनों के आण्विक आधार को समझने के लिए यह आवश्यक है कि हम DNA की संरचना, उसके संश्लेषण और उसमें होने वाली त्रुटियों की प्रकृति को जानें। DNA दोहरी सर्पिल संरचना में होता है जिसमें न्यूक्लियोटाइड्स का क्रम आनुवंशिक जानकारी को निर्धारित करता है। जब यह क्रम बदलता है, तो जीन का उत्पादित प्रोटीन भी प्रभावित होता है, जिससे phenotypic परिवर्तन उत्पन्न हो सकते हैं। आण्विक स्तर पर उत्परिवर्तन कई प्रकार के होते हैं। सबसे सामान्य प्रकार
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