The sequence of an mRNA coding for a polypeptide with 50 amino acids has UAU as the 35th codon and AUG as the 26th codon. What will happen if the 25th codon gets mutated to UAA?

A polypeptide of 24 amino acids will be formed

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

2 polypeptides of 24 and 25 amino acids will be formed.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

A polypeptide of 49 Amino acid will be formed.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

A polypeptide of 25 Amino acid will be formed.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A A polypeptide of 24 amino acids will be formed
UAA is stop codon.
An AUG at 26th position will not start the transcription again as promoter would be absent at its upstream.

Suggest Corrections

Similar questions

What would happen if in a gene encoding a polypeptide of 50 amino acids, the 25th codon UAU mutated to UAA:

^{t h}

_{t} h

Join BYJU'S Learning Program