Dna

By bossramirez
  • Period: to

    Dna

  • Watson and Crick discover double helix structure

    Watson and Crick discover double helix structure

    ames Watson and Francis Crick win the race to discover the structure of DNA after seing Rosalind Franklin's x-ray crystallography photos.
  • Ray White describes first polymorphic RFLP marker

    Ray White describes first polymorphic RFLP marker

    RFLPs (restriction fragment length polymorphisms) are strands of DNA that repeat over and over again. Each person has a unique number and pattern of RFLPs.
  • Kary Mullis develops PCR

    Kary Mullis develops PCR

    The discovery of PCR (polymerase chain reaction) allowed small amounts of DNA to be replicated, producing millions of copies in a few short hours.
  • Alec Jeffreys develops DNA fingerprinting technique

    Alec Jeffreys develops DNA fingerprinting technique

    Alec Jeffreys discovers that each person has a unique genetic fingerprint that is a combination of their parents', after noticing that one of his lab assistants inherited bands from each of her parents.
  • DNA casework started at FBI

    DNA casework started at FBI

    The FBI begins to use DNA evidence as a means of convicting criminals.
  • First use of STR in DNA analysis

    First use of STR in DNA analysis

    STR polymorphisms are shown to have an extended life and more reliability for identifying individuals than VNTRs.