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Question

mRNA directs the synthesis of proteins based on the sequence of

A
Exons
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B
Introns
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C
Codons
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D
Anticodons
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Solution

The correct option is B Codons

  • Translation takes place in the cytoplasm.
  • The mRNA interacts with the ribosome, which "reads" the sequence of mRNA bases.
  • Each sequence of three bases, called a codon, usually codes for one particular amino acid. (Amino acids are the building blocks of proteins.)
  • A type of RNA called transfer RNA (tRNA) assembles the protein, one amino acid at a time.
  • Protein assembly continues until the ribosome encounters a “stop” codon (a sequence of three bases that does not code for an amino acid).

So, the correct answer is 'Codons'



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