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Forensics DNA

DNA

QuestionAnswer
DNA stands for Deoxyribonnucleic Acid
RNA stands for Ribonucleic Acid
Chromosomes arranged in... Double Helix
A basic unit of heredity Gene
Number of Human Chromosomes 46
Nucleotides are made of... sugars, phosphate and base
A - Base Adenine
G - Base Guanine
C - Base Cytocine
T - Base Thymine
Purines Adenine and Guanine
Pyrimidines Cytocine and Thymine
Sources of DNA (5) Hair, Semen, Blood, Skin, Saliva
% of DNA non-encoded 95%
% of Genome like everyone else 99%
RFLP - Test Restriction Fragment Length Polymorphism
PCR - Test Polymerase Chain Reaction
STR - Test Short Tandem Repeaters
mtDNA - Test Mitochondrial DNA
RFLP - Method Separates DNA fragments, fragments then x-rayed. Requires a lot of DNA.
PCR - Method replicates DNA developed in the 1980's fast, inexpensive, requires little DNA
STR - Method Most commonly used, examines repeated sequence pairs, fast, inexpensive and can use little or damaged DNA
CODIS - Acronym Combined DNA Information System
CODIS - Organization Started in 1990, all states are required to submit DNA to federal database. any lab in any town can access the system.
How DNA profiling is used? prove guilt, exonerate, paternity
MO - Acronym modus operandi
Created by: cm19942007boi
 

 



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