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Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYMolecular Basis of Inheritance2 Marks
Question
Who postulated an adapter molecule to link the genetic code and the amino acids? What are its functions?
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Answer

Francis Crick proposed the presence of an adapter molecule, i.e. rRNA.
  1. It has an amino acid binding end; so it transports a specific amino acid to the site of protein synthesis.
  2. By its anticodon, it recognises the codon at the A site and binds to it by hydrogen bonds and ultimately releases the amino acid it carries.

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