Q. 25 A5.0( 2 Votes )

Explain the proce

Answer :

After transcription, the processed mRNA (messenger RNA) leaves the nucleus through the nuclear pores and enters the cytoplasm where it attaches to a ribosome. tRNA (transfer RNA) molecules in the cytoplasm carry an amino acid corresponding to its anticodon.

A tRNA molecule with a complementary anticodon binds to the first codon or the start codon which is AUG of the mRNA. A second tRNA molecule binds to the next codon on the mRNA molecule. This allows a peptide bond to form between the amino acids on the tRNA molecules. The first tRNA molecule leaves the ribosome.

The ribosome moves along the mRNA and the process repeats. The length of the polypeptide chain increases and translation stops when the ribosome reaches the stop codon (UAA, UAG, and UGA) on mRNA.

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