Q. If there are 999 bases in an RNA that codes for a protein with 333 amino acids, and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered?
A) 333
B) 1
C) 11
D) 33 tRNA— the adapter molecule
Explanation
999 bases – 333 amino acids 900 bases – 300 amino acids Thus, the deletion of a single base at 901 position would cause frameshift mutation and will affect subsequent 33 codons.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.