GENETICS AND EVOLUTION
MOLECULAR BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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universality
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degeneracy
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unambiguoty
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non overlapping nature
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Detailed explanation-1: -The genetic code is degenerate. There are more than one codon which can code for the same amino acids. So it is difficult to trace the nucleotide sequence which is present on the mRNA with the help of the amino acid sequence.
Detailed explanation-2: -In order to determine the gene sequence based off an mRNA template, you can simply do the reverse. You would match up DNA nucleotides with the complementary RNA nucleotides. You can also determine the sequence of the coding strand of DNA by simply changing the RNA U’s into DNA T’s.
Detailed explanation-3: -One amino acid codes triplet three nucleotide. So, after addition of adenosine residue the total number of nucleotide is 16. So five amino acids will be coded by the mRNA sequence.
Detailed explanation-4: -The mRNA is then pulled through the ribosome; as its codons encounter the ribosome’s active site, the mRNA nucleotide sequence is translated into an amino acid sequence using the tRNAs as adaptors to add each amino acid in the correct sequence to the end of the growing polypeptide chain.