Name the four bases present in DNA. Which one of these is not present in RNA ? (2 marks)
The four bases present in DNA are :
(i) Adenine (A) (ii) Guanine (G) (iii) Cytosine (C) (iv) Thymine (T)
In RNA, Thymine (T) is absent. It has Uracil (U) in place of Thymine.