Forensics Hair

While investigating a mysterious disappearance in the neighborhood, Zynzhere is excited to find a hair with the follicle attached near the missing person's last known location. Explain why Zynzhere might be excited.

Answer explanation

Finding the hair with the follicle means that it is likely that DNA can be obtained from this hair sample.

Tags

NGSS.HS-LS3-1

During a science fair project, Ever, Aneudy, and Ingrid are examining the microscopic properties of hair samples under a microscope. List 3 examples of the microscopic properties they might observe.

Answer explanation

Microscopic: medulla pattern, cuticle structure, specific color of hair

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

Mathematical Equivalence

ON

Mathematical Equivalence

ON

The protein that makes up hair is called _____

• ninhydrin

• pigments 

• medulla

• keratin

Tags

NGSS.HS-LS1-6

comparison microscope

• the central core of a hair fiber

• material that connects an individual or thing to a certain group

• the tough outer covering of a hair composed of overlapping scales

• a compound microscope that allows the side by side comparison of the samples, such as of hair or fibers

class evidence

• material that connects an individual or thing to a certain group

• bits of pigment found in the cortex of a hair

• the tough outer covering of a hair composed of overlapping scales

• small but measurable amounts of physical or biological material found at crime scene

The deepest layer of hair (compared to the lead of a pencil) is the ___

• medulla

• cortex

• cuticle

• keratin 

To determine the medullary index, you would ______.

• measure the diameter of the medulla and divide it by the diameter of the hair

• measure the diameter of the hair and add it to the diameter of the medulla

• measure the length of the medulla and divide it by the length of the hair

• measure the diameter of the medulla and multiply it by the diameter of the cortex

Forensics Hair

• To extract DNA for identification purposes

• To determine the age of the person

• To analyze the diet of the person

• To find out the hair color

Tags

NGSS.HS-LS3-1