Commonly confused
DNA vs RNA
DNA instructions ki master copy hai; RNA ek working copy hai jo usse ek message le jaati hai. Same alphabet, alag kaam.
DNA
Double-stranded, sugar deoxyribose use karta hai, aur bases A, T, G, C hain. Stable hai aur nucleus me rehta hai, genes ka permanent store.
RNA
Aksar single-stranded, sugar ribose use karta hai, aur T ki jagah uracil (U) rakhta hai. Short-lived hai aur gene ka message wahaan le jaata hai jahaan proteins bante hain.
Trap yeh hai
Sabse tez tests: DNA me thymine (T), RNA me uracil (U); DNA double-stranded, RNA aksar single. Students sugar ka farak (deoxyribose versus ribose) bhi bhool jaate hain. Agar U dikhe, to RNA hai.
Ye kahaan jud'ta hai
RNA isliye hota hai kyunki cell apna master DNA nucleus me safe rakhta hai aur kaam ke liye disposable copies bhejta hai. Wahi copying step transcription hai.
Copy kaise banta hai →Ek quick check
Kaunsa base RNA me milta hai par DNA me nahi?
- AThymine
- BUracil
- CAdenine
- DGuanine