Ncert Exercises & Solutions

Q. 10. What are the functions of

(i) methylated guanine cap?

(ii) poly-A 'tail' in a mature on RNA?

(i) methylated guanine cap helps in binding of mRNA to smaller ribosomal sub-unit during initiation of translation.

(ii) Poly-A tail provides longevity to mRNA's life. Tail length longevity of mRNA are positively correlated.