OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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changing AAA to AAG
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changing TTC to ATC
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changing CCG to GCG
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deleting the first A from AAA
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Detailed explanation-1: -Answer: The correct answer is option 1 i.e. changing 3’ AAA 5’ to read 3’ AAG 5’. Because the given sequence is of DNA which need to be transcribed first into mRNA and after that the mRNA is translated into protein.
Detailed explanation-2: -AUG is the most common START codon and it codes for the amino acid methionine (Met) in eukaryotes and formyl methionine (fMet) in prokaryotes. During protein synthesis, the tRNA recognizes the START codon AUG with the help of some initiation factors and starts translation of mRNA.
Detailed explanation-3: -So, the correct answer is ‘UCU, UCC, UCA and UCG’
Detailed explanation-4: -A set of three bases makes up a codon. The messenger RNA contains many such codons, with a series of three bases followed by three more bases, and then three more bases, and so on.