Write a note on messenger RNA.

Solution

Messenger RNA (mRNA)
It forms only 5% of total RNA but is longest of all. It brings instructions from DNA for the formation of a particular polypeptide. The instructions are coded in the form of base sequence called genetic code . Three adjacent nitrogen bases (triplet codons) specify a particular amino acid. it does not contain introns.

Fig. mRNA
It consists of a methyl cap at 5' end , a non coding region near both the ends, by initiation codon and coding region, a termination codon and a poly-A tail at 3' end.

Some More Questions From Molecular Basis of Inheritance Chapter

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Molecular Basis Of Inheritance

Write a note on messenger RNA.

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