Question
विकासवाद के उत्परिवर्तन (म्यूटेशन) सिद्धांत पर चर्चा करें।
Answer :
Word Count : 486
____ __________ _____ ____ __________ ___ ______ ______ ____ ______.
______ _____ __________ _____ __________ _______ _____ ______ __________ _______ _______.
__________ _______ _______ __________ _______.
____ ________ ____ __________ _______ ___ ___.
_____ ________ _______ _______ _____ ________ ___ _________ ___ ___ ______ ________.
_____ _________ ____ ___ __________ ______ ___ _________ _________ _________.
_________ _______ _________ _______ _______ _____ _____.
____ ____ ______ __________ ___ __________ ___ _________ __________.
_________ ____ ________ __________ ___ ____ _____ ____ _____ ________.
______ __________ ___ ____ ________ _____ _______ _______.
___ _______ _____ _________ ________ ______ _______ _________ __________.
___ ____ ________ _______ _________ ____ ________ ______.
______ ____ ____ ______ _____.
___ _____ ___ ___ __________ ________ _______ _______ ____.
____ ___ ________ _________ ______ ________ _____ ______ ____.
_____ _________ _______ ____ ________ ________ ______ ________.
______ ______ __________ __________ _____ _________ __________ __________ ________ _______ _____ _______.
_____ ____ _________ __________ _______ ________ ____ ____ _______.
___ __________ __________ __________ ________ ___ ______.
___ __________ _______ ___ ________ _________ ___ _________.
_____ _____ _________ __________ _____ ____ ____ ________ _________.
_______ ________ _________ __________ _________ ______.
______ ____ ________ ___ ____.
_____ _______ ______ ________ ________.
_________ ___ _______ _______ ______ _____ ______.
___ ____ ________ ___ ___ ______.
__________ _________ ____ ____ ___ __________.
__________ __________ _________ __________ ____ ________.
_________ _____ _________ _____ __________ _______ _______ ____ ______ _______.
_________ ________ _______ _________ ________ ________ _____ ______ ___ _____ ___.
______ ____ ______ ________ _______ __________ _________.
______ ________ ___ ______ _____ __________ ____ _______.
______ ____ ____ _____ ____ ____.
____ ________ ______ _____ _______ _________ ________ ____ _____ ____ _____.
________ ________ ______ ___ _____ ___ _______ __________ ___ _________.
___ ______ ____ _______ ______ __________ ______.
____ ________ ________ _________ ________ __________ _____ ________.
_______ ___ ________ ____ _____.
______ _________ ________ ___ __________ ____ _____ _______ ___ _______.
___ _____ ________ _____ ______ _______ _________ _____ ____ __________.
____ ______ ________ ______ _________ _____.
___ _________ _________ ___ ______ ____ ___ _____.
____ ________ __________ _______ ______ ________.
___ _______ __________ _________ _____ _________ _______ _______.
______ ________ ____ _________ ________ _____ ______ ____.
Skip in 10
विकासवाद के उत्परिवर्तन सिद्धांत का संबंध जीवों में होने वाले आनुवंशिक परिवर्तनों से है। इस सिद्धांत को मुख्य रूप से डच वनस्पति वैज्ञानिक ह्यूगो डी व्रीज़ ने बीसवीं शताब्दी के प्रारम्भ में प्रतिपादित किया। उन्होंने अपने प्रयोगों के आधार पर यह बताया कि जीवों में नई प्रजातियों और नई विशेषताओं का विकास केवल छोटे-छोटे क्रमिक परिवर्तनों से नहीं, बल्कि कभी-कभी अचानक होने वाले वंशागत परिवर्तनों से भी हो सकता है। इन अचानक और अपेक्षाकृत स्थायी आनुवंशिक परिवर्तनों को उन्होंने ‘उत्परिवर्तन’ कहा। डी व्रीज़ ने अपने अध्ययन के लिए ओएनोथेरा लैमार्कियाना नामक पौधे का प्रयोग किया। उन्होंने पाया कि इस पौधे की संततियों में कुछ ऐसे नए लक्षण अचानक दिखाई देते हैं, जो उनके पूर्वजों में नहीं थे।
__________ ______ _____ ____ _______ ________ __________.____ __________ _____ ____ __________ ___ ______ ______ ____ ______.
______ _____ __________ _____ __________ _______ _____ ______ __________ _______ _______.
__________ _______ _______ __________ _______.
____ ________ ____ __________ _______ ___ ___.
_____ ________ _______ _______ _____ ________ ___ _________ ___ ___ ______ ________.
_____ _________ ____ ___ __________ ______ ___ _________ _________ _________.
_________ _______ _________ _______ _______ _____ _____.
____ ____ ______ __________ ___ __________ ___ _________ __________.
_________ ____ ________ __________ ___ ____ _____ ____ _____ ________.
______ __________ ___ ____ ________ _____ _______ _______.
___ _______ _____ _________ ________ ______ _______ _________ __________.
___ ____ ________ _______ _________ ____ ________ ______.
______ ____ ____ ______ _____.
___ _____ ___ ___ __________ ________ _______ _______ ____.
____ ___ ________ _________ ______ ________ _____ ______ ____.
_____ _________ _______ ____ ________ ________ ______ ________.
______ ______ __________ __________ _____ _________ __________ __________ ________ _______ _____ _______.
_____ ____ _________ __________ _______ ________ ____ ____ _______.
___ __________ __________ __________ ________ ___ ______.
___ __________ _______ ___ ________ _________ ___ _________.
_____ _____ _________ __________ _____ ____ ____ ________ _________.
_______ ________ _________ __________ _________ ______.
______ ____ ________ ___ ____.
_____ _______ ______ ________ ________.
_________ ___ _______ _______ ______ _____ ______.
___ ____ ________ ___ ___ ______.
__________ _________ ____ ____ ___ __________.
__________ __________ _________ __________ ____ ________.
_________ _____ _________ _____ __________ _______ _______ ____ ______ _______.
_________ ________ _______ _________ ________ ________ _____ ______ ___ _____ ___.
______ ____ ______ ________ _______ __________ _________.
______ ________ ___ ______ _____ __________ ____ _______.
______ ____ ____ _____ ____ ____.
____ ________ ______ _____ _______ _________ ________ ____ _____ ____ _____.
________ ________ ______ ___ _____ ___ _______ __________ ___ _________.
___ ______ ____ _______ ______ __________ ______.
____ ________ ________ _________ ________ __________ _____ ________.
_______ ___ ________ ____ _____.
______ _________ ________ ___ __________ ____ _____ _______ ___ _______.
___ _____ ________ _____ ______ _______ _________ _____ ____ __________.
____ ______ ________ ______ _________ _____.
___ _________ _________ ___ ______ ____ ___ _____.
____ ________ __________ _______ ______ ________.
___ _______ __________ _________ _____ _________ _______ _______.
______ ________ ____ _________ ________ _____ ______ ____.
IGNOU ACADEMY
Your IGNOU journey, made easier.
- Solved Assignments
- Study Notes
- Guess Papers
- Question Papers
Continue Reading — It's Free
Sign in with Google to unlock more of this answer.
✓ Free access
✓ Unlock up to 60% of the answer
✓ No payment required
✓ Unlock up to 60% of the answer
✓ No payment required
Quick Google sign-in. No separate registration form.