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                              Q:
                           
                           
                                                      | A) Adenine | B) Cytosine | 
| C) Guanine | D) All the above | 
                              Answer:   D) All the above
                              
                                                            
                              
Explanation:
                               
                           
                           Explanation:
Nitrogenous base: A molecule that contains nitrogen and has the chemical properties of a base.
The nitrogenous bases in DNA are
Adenine (A),
Guanine (G),
Thymine (T), and
Cytosine (C).
Whereas the nitrogenous bases in RNA are the same, with one exception:
Adenine (A),
Guanine (G),
Uracil (U), and
Cytosine (C).
 
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