2.3.4- Genes and Protein Synthesis



  • dna contains gene 
  • a gene is a sequence of dna nucleotides that codes for a polypeptide
  • this sequence forms the primary sequence of the polypeptide chain
  • the nucleotide bases in a gene determine the order of the amino acids in a protein
  • each amino acid is coded for by a sequence of 3 bases (triplet) in a gene
  • the genetic code: is the different sequence of bases code for different amino acids
  • so the sequence of bases is a template used to make proteins.

DNA, RNA and protein synethesis:

  • DNA is found in the nucleus, it is too large to leave so a section is copied into mRNA- 
  • The mRNA leaves the nucleus and…


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