Genetic Code

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Created by
Jenny

Cards (19)

  • The sequence of bases in DNA forms the genetic code.
  • protein molecule of sequence of different amino acids could determine the shape and identity of the molecule.
  • Each amino acid ( Serine, Cysteine, Valine, Glycine and Alanine) is coded for by a particular triplet of bases.
  • Triplet code and their specific amino acid:
  • Each triplet codes for a specific amino acid: CGA->Arg, CAA -> Gln, CCA -> Pro, GCT -> Ala, GGG -> Gly, GAG -> Glu.
  • The amino acids are joined together in the correct sequence to make part of a protein.
  • The proteins build the cell structures
  • The proteins also make enzymes
  • The DNA controls which enzymes are made and the enzymes determine what reactions take place
  • The structures and reactions in the cell determine what sort of a cell it is and what its function is.
  • So, DNA exerts its control through the enzymes
  • A sequence of triplets in the DNA molecule may code for a complete protein. Such a sequence forms a gene. There may be a thousand or more bases in one gene.
  • There may be a thousand or more bases in one gene.
  • Components of nucleotides: A) a sugar called, deoxyribose B) a phosphate group, -PO4 C) an organic base
  • Correct pairing of Adenine: Thymine
  • Correct pairing of Cytosine: Guanine
  • Correct pairing of Guanine: Cytosine
  • What are the four organic bases?
    • Adenine, Thymine, Cytosine, Guanine
  • DNA molecules are formed from: nucleotides