• DNA first discovered

    DNA first discovered by Swiss Physician, Friedrich Miescher by discovering a micro substance in pus of discarded surgical bandages; called it Nuclein.
  • Links of DNA

    Discovery followed by Pheobus Levene's identification of base, sugar, and phosphate nucleotide units; suggested DNA consisted of a string of nucleotide units linked together through phosphate groups and a chain of short bases repeated in a fixed order.
  • DNA has genetic information

    Alfred Hersey and Martha Chase prove DNA has genetic information
  • Double Helix

    Franklin and Gosling's paper identified distinctions between A/B structures of Double Helix. Also, four years later, Crick laid out "Central Dogma" of molecular biology, fforetold revolution between DNA, RNA, and Proteins.
  • Genetic Code

    Crick and coworkers showed genetic code based on non-overlapping triplets of bases, called codons, allowing Har Gobind Khrana, Robert W., Holley and Marshall Warien Niren berg to decipher genetic code.
  • Genetic markers for Paternity tests

    Human Leukocyte Antigens (HLA), genetic markers for Paternity testing
  • First DNA profiling test

    Sir Alec Jeffreys develops the first DNA profiling test, involving detection of a multilocus RFLP pattern
  • Solved a double homicide

    DNA used to solve double homicide for first time
  • DNA profiling introducted to the US criminal court

    DNA profiling is first introducted to the US criminal court
  • DNA technology published

    The National Reseach Council Committee on Forensic DNA published "DNA Technology in Forensic Science".
  • Nonhuman DNA forensics

    Scientists differentiate between human and nonhuman DNA forensics