Single Choice

A protein with $$100$$ amino acid residues has been translated based on triplet genetic code. Had the genetic code been quadruplet, the gene that codes for the protein would have been.

ASame in size
BLonger in size by $$25$$%
Correct Answer
CLonger in size by $$100$$%
DShorter in size

Solution

Since the genetic code is a triplet, 64 triplets of nucleotides will be involved ( $$4^3$$ = 64). If the genetic code is quadruplet it consists of 256 triplets of nucleotides ($$4^4$$ = 256).
64 triplets coded for 100 amino acid residues. So when 256 triplets are involved in coding the genes that codes for the proteins would have been longer in size by 25%.
Calculation-
(100x 256)/64= 400 amino acids.
Hence the percent change will be (100/400) x100= 25%
Thus the correct answer is option B.

SIMILAR QUESTIONS

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Select the correct option regarding genetic code of Glycine.

Genetics

Match column I with column II and select the correct option from the-given codes. Column I (Codons) Column II (Translated amino acid) A. UUU (i) Serine B. GGG (ii) Methionine C. UCU (iii) Phenylalanine D. CCC (iv) Glycine E. AUG (v) Proline

Genetics

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Genetics

Choose the correct answer from the alternatives given : An organism uses 20 amino acids while its DNA is made up of 6 types of nitrogenous bases. What would be the minimum size of a codon?

Genetics

One of the following is true with respect to AUG

Genetics

Which of the following Is correct regarding genetic code?

Genetics

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Genetics

In an in vitro translation experiment, poly(UC) RNA template produced poly(Ser-Leu), while poly(AG) RNA template produced poly (Arg-Glu) polypeptide. Which one of the following options represents correct interpretations of the codons assignments for Ser, Leu, Arg, and Glu.

Genetics

One of the following is true with respect to AUG

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