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Identification: classic and DNA. Ivana Samardžić Mentor: A. Žmegač Horvat. ...of the living and the dead. investigation of any death the living – inability to identify themselves, immigration, inheritance. Morphological characteristics. only by MATCHING the parameters

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identification classic and dna

Identification:classic and DNA

Ivana Samardžić

Mentor: A. Žmegač Horvat

of the living and the dead
...of the living and the dead
  • investigation of any death
  • the living – inability to identify themselves, immigration, inheritance
morphological characteristics
Morphological characteristics
  • only by MATCHING the parameters
  • specific feature possesed by the individual
  • height, weight and general physique
  • hair color and length, moustache, skin pigmentation, eye color
  • clothing, jewellery, ornaments
  • facial appearance, age
fingerprints
Fingerprints
  • position of minute defects on the ridges
  • no less than 16 points of similarity
  • chances for identical fingerprint: 1:64 billion
identity from teeth
Identity from teeth
  • identification of the dead, bite marks, estimation of age
  • commonly comparison of antemortem dental chartings with the direct examination of the teeth
  • mass disasters
  • no previous records – age, sex and ethnic origin
identification of the origin of tissue or samples
Identification of the origin of tissue or samples
  • blood, semen, saliva, stains on bodies, weapons, clothing
  • matching remains
  • resolution of paternity, maternity and inheritance disputes
the individuality of cells
The individuality of cells
  • blood grups and Rh factor – possibility to exclude 93% of non-matching samples
  • replaced with DNA analysis of human tissue and fluid
identification by dna profiling
Identification by DNA profiling
  • nearly 100% in exclusion and in identification
  • 10% are active genes
  • 90 % are “silent” – zone of 200 to 14 000 repeats of identical sequences of bases are constant and transmitted from parents – ESSENTIAL for DNA analysis!
  • “bar code”
slide9
risk of contamination
  • blood, hair with roots;

samples of spleen;

buccal smears; vaginal, anal and penile swabs

  • paternity/maternity testing
  • every bar in the “bar code” must have come from either the father or mother, half from each
tatoos and body piercing
Tatoos and body piercing
  • there has to be comparison
  • photographs and drawings if visual identification is not possible
identity of decomposed or skeletalized remains
Identity of decomposed or skeletalized remains
  • are the remains actually bones?
  • are the remains human?
  • one or more bodies?
  • what sex are the bones? – pelvis and skull
  • age, height, race?
  • can a personal identity be discovered?
  • YouTube - Crime 360: Human Bone Identification
facial reconstruction from skulls
Facial reconstruction from skulls
  • measuring the average soft-tissue thickness at many points on the skull and rebuilding this layer with plasticine on unknown skull
  • computerized reconstruction
  • individuality of faces?
  • what about eyes and lips?