The process of decoding mrna into a polypeptide chain is known as

Translation

Explanation:

The entire process is called gene expression and it involves transcription and translation.

In Transcription, a particular portion of DNA is copied into RNA by the enzyme RNA polymerase.

In translation, messenger RNA (mRNA) is decoded in the ribosome decoding center to produce a specific amino acid chain, or polypeptide. The polypeptide later folds into an active protein and performs its functions in the cell

Translation

Explanation:

Translation could be described as the process whereby

a genetic code from the mRNA is decoded by the ribosome so that protein is produced. It is in this process that the mRNA is decoded and then translated to give a product of a polypeptide sequence (protein), the synthesis and the formation of the protein is accomplished with the aid of a ribosome, which is a big complex substance of ribosomal RNAs and proteins.

During this process the mRNA's genetic message is decided and a pure new polypeptide chain is formed. the RNA latter brings about the translation of the condom's sequence on the strand of the mRNA.

Note: The importance of tRNA in transferring of a free amino acid to the ribosome from the cytoplasm, so that it can be bounded to the polypeptide chain pending the time the peak limit of the condon on the mRNA is reached.