Question
विविधता के स्रोत तथा उसकी अभिव्यक्ति की विवेचना कीजिए।
Answer :
Word Count : 236
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जीवों में विविधता वह आधार है जिस पर विकास की प्रक्रिया निर्भर करती है। विविधता के प्रमुख स्रोत आनुवंशिक तथा पर्यावरणीय होते हैं। आनुवंशिक विविधता का मुख्य स्रोत उत्परिवर्तन है, जिसमें जीन या गुणसूत्रों की संरचना अथवा संख्या में अचानक परिवर्तन होता है। ये परिवर्तन प्राकृतिक रूप से या बाह्य कारकों जैसे विकिरण और रसायनों के प्रभाव
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