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Can the racial origins of hair be determined?

Characteristics within these regions are used to determine whether the hair is human or animal, racial origin and body area. A microscopic hair examination can also determine if a hair was forcibly removed, artificially treated or diseased.

What are hair like fibers?

What are hair fibers? Hair fibers are lightweight, teeny-tiny fibers made of keratin protein\u2014the same keratin found in your strands\u2014that can be applied to your hair and scalp to mask the appearance of thinning hair or bald spots.

Can the racial origin of hair be determined explain?

Because hair can be grouped into three different racial groups it can be used to identify if it came from someone of European, Asian, or African ancestry. As such, hair can be used to exclude people of certain racial group as suspects or as having been at a crime scene.

What is the importance of medulla in hair?

The medulla does not really do anything, but its DNA tells us from which species it comes, and from where on the body that hair would have been found. The cortex surrounds the medulla and contains the main part of the fibrous mass that makes up a hair. This is full of keratin proteins and lipids.

What can affect the physical appearance of hair?

The physical appearance of hair can be affected by nutritional status and intentional alteration (heat curling, perms, straightening, etc.). Hair is composed of the protein keratin, which is also the primary component of finger and toe nails.

hair and fiber evidence worksheet

in which samples are we viewing the cuticle? how do they compare? the cuticle varies in its the structure of hair has been compared to that of a what is the definition of hair in humans where are the different types of hair found

Is the smallest unit of a textile material can occur naturally or man made?

A fiber is the smallest visible unit of any textile product, but yet is the most flexible and may be spun into yarn and made into fabrics. Fibers naturally occur in both plants and animals. More than half of the fibers produced are natural. Natural fibers include cotton, hair, fur and silk.

Is hair considered fiber?

The hair, when considered as a physical body, is a very resistant fiber.

How can you tell the difference between hair and fiber?

0:29 9:51 However only take one shape circular. Also hairs has some very recognizable structural features theMoreHowever only take one shape circular. Also hairs has some very recognizable structural features the cuticle and the medulla.

What is the smallest unit of this fiber?

The sarcomere is the smallest functional unit of a skeletal muscle fiber and is a highly organized arrangement of contractile, regulatory, and structural proteins.

Is it possible to show that a hair came from a specific person or animal?

It is fairly easy to determine the body area from which a hair came. DNA may be found in the hair root and can be used to determine individual characteristics. There is no way a hair can be individualized. Only one medulla pattern type is found in human hair.

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