Identification classic and dna
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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

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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”


Identification classic and dna

  • 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?


Thank you

THANK YOU!


Identification classic and dna

  • Richard Sheperd: Simpson’s Forensic Medicine, Hodder Arnold


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