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kati45 [8]
3 years ago
13

Crime-scene investigators collected hair from a dead person's body. is the hair human or nonhuman? describe two ways that the in

vestigators could distinguish human hair from animal hair
Biology
1 answer:
Nana76 [90]3 years ago
6 0
The investigators could distinguish human hair from animal hair by the patter of pigmentation and by the medullary index.
The pigmentation in human hairs is denser toward the cuticle, whereas in animal hair is denser toward the medulla. Human hairs are usually one colour throughout the whole length, while animal hairs may change colour suddenly.
The medulla in humans is thinner than in animals: the medullary index for human hairs is 0.33 or less; the medullary index for animal hairs is 0.5 or more.
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