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  • Due to deaminating agent hypoxanthine mis pairs with adenine. Similarly, C-G is replaced by _____ base pair :   Option: 1 Purine- pu

Due to deaminating agent hypoxanthine mis pairs with adenine. Similarly, C-G is replaced by _____ base pair : 
 

Option: 1

Purine- purine 
 


Option: 2

pyrimidine - purine 
 


Option: 3

Pyrimidine - pyrimidine 
 


Option: 4

None of the above 
 


Answers (1)

best_answer

 

 

As we have learnt in Mutagenesis & Mutagens -

  • Mutagenesis is the process of inducing mutations through a number of physical, chemical or biological agents.
  • The agents that cause mutations are called mutagens.

As per this question, Nitrous acid is a deaminating agent that changes cytosine to uracil, guanine to xanthine and adenine to hypoxanthine. Hypoxanthine mis pairs with cytosine. Similarly, C-G is replaced by U-A. Thus, U-A base pair stands for Pyrimidine - Purine base pair.

Hence, the correct option is (b).

Posted by

HARSH KANKARIA

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