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Forensics 200 Hair Analysis Lesson

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PRESENTATION OUTLINE

KIRK ODOM'S CASE😳

HAIR ANALYSIS CAN WRONGFULLY CONVICT A PERSON
Photo by Amos Bar-Zeev

Kirk Odom Spent 31 Years
On Parole After Pseudoscientific Analysis After It Was Finally discredited.

Learning Objectives :

In this lesson you will be able to identify the race of an individual based on hair characteristics and also how to identify the somatic origin of unknown hairs based on their characteristics.

Photo by Al_HikesAZ

VOCABULARY

  • Race: Categorization of humans into groups (physical traits, ancestry, genetics, social or cultural traits)
  • Somatic Origin: From the body


Cross Section

IDENTIFYING RACE OF AN INDIVIDUAL BASED ON HAIR CHARACTERISTICS

Hair is class evidence. Physical characteristics of a hair can give clues to the broad racial background.
*Negroid Hair has uneven pigment. They are also flat and oval in cross section
*Mongoloid Hair is straight, almost circular in cross section

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There are six types of hairs on the human body

  • Head hair
  • Eyebrow hair
  • Eyelash hair
  • Underarm hair
  • Auxiliary or body hair
  • Pubic hair

IDENTIFYING THE DIFFERENT HAIRS AND THEIR CHARACTERISTIC

Head hair is circular or elliptical in cross section. Eyebrow and eyelash hairs are also circular but can often have tapering ends.Beard hairs are thick and triangular. Depending on whether the body are is shaved, body hairs can be oval or triangular just like pubic hairs.

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