Hair
What are the parts of the hair shaft?
The medulla, The cortex and The cuticle
How many strands make up a DNA double helix?
2
True or False: Twins have the same fingerprints
False
What is blood mainly made of?
Plasma
Which type of evidence relies on an inference to connect it to a conclusion of fact?
circumstantial evidence
What part of the hair gives it its pigment?
The cortex
What is a "codon"?
A sequence of three consecutive nucleotides in a DNA or RNA molecule that codes for a specific amino acid.
How many different types of fingerprint patterns are there?
Three: Loops, Whorls and Arches
Why does blood turn red?
The iron is reacting to oxygen.
Which type of evidence is a body of facts that directly supports the truth of an assertion without intervening inference.
Direct evidence
What can be determined from hair evidence?
Whether the hair is from an animal or a human, racial origin and body area
What information is coded into DNA?
Each gene's code uses the four nucleotide bases of DNA: adenine (A), cytosine (C), guanine (G) and thymine (T)
True or False: Some people are born without fingerprints.
True- this is called Adermatoglyphia
What are the main types of blood?
A, B, AB and O
What type of evidence is created when objects make contact, and material is transferred?
Trace evidence
How do you distinguish a hair that has been bleached or dyed from a natural hair?
It displays a smooth uniform color similar to tinted glass if it has been bleached or dyed.
What is "transcription" of DNA?
the process by which a cell makes an RNA copy of a piece of DNA.
True or False: No two people have the same fingerprints.
False, it is said that they can't but they can, it's rare but possible.
What is the rarest blood type?
AB-negative
What is the type of evidence where anything that can be linked to a unique, single, specific source?
Individual evidence
Where can drug traces be found in hair?
The hair follicle.
What does DNA stand for?
Deoxyribonucleic Acid
What is the scientific name of fingerprints?
dermatoglyph
What makes up blood?
plasma, red blood cells, white blood cells, and platelets.
What type of evidence consists of substances such as blood and hair, which can be used to place an individual in a general class but cannot be used to identify an individual?
Class evidence