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  4. Methyl guanosine triphosphate is added to the 5' end of hnRNA in a process of

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Q. Methyl guanosine triphosphate is added to the $5'$ end of $hnRNA$ in a process of

AMUAMU 2010Molecular Basis of Inheritance

Solution:

At $5'$ end of $hnRNA$, a cap is formed by modification of $GTP$ into $7$-methyl guanosine or $7m\,Gppp$. This process is called capping and it protects the $mRNA$ from degradation by nucleases and also.