THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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peptide bond
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polypeptide
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anti-codon
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amino acid
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Detailed explanation-1: -The mRNA bases are grouped into sets of three, called codons. Each codon has a complementary set of bases, called an anticodon. Anticodons are a part of transfer RNA (tRNA) molecules. Attached to each tRNA molecule is an amino acid–in this case, the amino acid is methionine (met).
Detailed explanation-2: -When mRNA is translated into a polypeptide chain during translation, the codons of mRNA base pair with complementary RNA sequences in tRNA molecules (which carry amino acids to the growing polypeptide) at the ribosome. mRNA codons and tRNA anticodons are complementary to each other.
Detailed explanation-3: -A transfer RNA (tRNA) is a special kind of RNA molecule. Its job is to match an mRNA codon with the amino acid it codes for. You can think of it as a kind of molecular “bridge” between the two. Each tRNA contains a set of three nucleotides called an anticodon.
Detailed explanation-4: -So, the correct option is ‘UAC’
Detailed explanation-5: -The AUG start codon signals the ribosome to place in the amino acid methionine because the tRNA that has methionine attached to it has the anticodon sequence UAC.