Forensic science

Question 1

Application of molecular biology

Answer 1

• Human discrimination (criminal, paternity,DVI)
• Flora and Fauna discrimination (wildlife crime, Stock rustling, phylogenic id of botanical material)
• Microorganism discrimination (CT against bioterrorism)
• Contamination of implicit drug

Question 2

Wildlife Crime

Answer 2

• Illegal trade of plant, animal, eggs and fishing
• Largely undetected crime due to lack of victim
• Cost around 6-12 Billion dollar annually
• Most work conducted in museum or university
• Use genomic and mitochondrial DNA to determine
• Result in: loss of diversity, habitat destruction, undermine legal trade, increase in transmission of disease and introduction of pest

Question 3

phylogenic id of botanical material

Answer 3

• Cannabis DNA profiling can be used to obtain tactical and strategical intelligent on the implicit drug trade
• mDNA id of grass ( the most common trace evidence)

Question 4

Contamination of implicit drug

Answer 4

• Develop a unique DNA profile that is unique to an area or developer

Question 5

Where can DNA be found in a scene

Answer 5

• Blood
• Semen
• Saliva, sweat, tear
• hair
• Skin
• feces, urine, vomit
• bone marrow

Question 6

STR

Answer 6

• Short tandem repeat
• Can be used for forensic science
• Amplify the DNA (PCR) and get a readout from it
• Compare the crime sample with the reference sample (DNA loci and alleles)
• Frequency calculation must be taken into consideration