A fragment of DNA has the instructions for making a cell’s PROTEIN.
- During transcription, a fragment of a DNA strand called gene is used as template to synthesize a complementary RNA strand known as messenger RNA (mRNA).
- In eukaryotic organisms, this primary transcript suffers the addition of a 5′ cap at the 5´end and a polyadenylic acid (poly-A) tail at the 3´end, thereby stabilizing 5′ and 3′ ends of the molecule. This process is called mRNA processing.
- Finally, the mature mRNA sequence is used as a template to produce a protein in the ribosomes by a process called translation.
In conclusion, a fragment of DNA has the instructions for making a cell’s PROTEIN.
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