Question

What does the reading frame establish? Explain your answer.

A. mRNA sequence

B. sequence of codons

C. redundancy

D. wobble

E. RNA anticodons

Answer 1

Ans) The correct answer is "B" i.e sequence of codons (The reading frame of the mRNA is read by the ribosome in the 5' --> 3' direction and ribosome adds the tRNAs corresponding to the codons.The reading frame is read in the form of codons i.e sequence of 3 nucleotide sequence like AUG which codes for methionine. When insertion occurs, this changes the reading frame due to the addition of a nucleotide or nucleotides and the amino acids coded will also be different).Thus the options "A,D,E" are incorrect.

Option D is incorrect and has no relevance to the question.