Question

Which RNA is having least age [MP PMT 2002]
A) m RNA
B) t RNA
C) r RNA
D) None of the above

Answer 1

hey,

the ans is : M-RNA.

reason: M-RNA is shortly lived. it has a maximum age and dies after only few translations.....

thank you......

Answer 2

A) mRNA is having least age.

The life span of the mRNA or the messenger RNA is the shortest.  The messenger RNA constitutes about 5% of the cells total RNA. This is the RNA which codes for protein and thereby is ideal for translation.  

As soon as the mRNA is transcribed it gets transported out if the nucleus into the endoplasmic reticulum, where it is immediately translated to the protein of interest. In case the protein is not required by the cell the mRNA produced is automatically degraded.