Introduction:
Biological evidence is a type of Physical Evidence that contains DNA. Biological evidence is very useful to connect an offender to a crime scene. Sometimes this evidence can be hard to find with the naked eye. DNA can be found on many things or objects.
Where to find Biological evidence on objects is given further:
- Baseball / Cricket Bat
Location – Handle
Source of DNA
• Skin Cells
• Sweat
• Blood
• Tissue
- Hat/Bandana
Location – Inside Surface
Source of DNA
• Skin Cells
• Sweat
• Saliva
• Hair
• Dandruff
- Mask
Location – Inside Surface
Source of DNA
• Skin Cells
• Sweat
• Saliva
• Hair
- Spectacles
Location –
• Nose
• Earpiece
• Lens
Source of DNA
• Skin Cells
• Sweat
- Facial Tissue/Cotton Swab
Location – Surface
Source of DNA
• Mucus
• Sweat
• Blood
• Semen
• Ear Wax
- Dirty Clothes
Location – Surface
Source of DNA
• Saliva
• Sweat
• Blood
• Semen
- Toothpick
Location – Surface
Source of DNA
• Saliva
• Blood
- Cigarette (Used)
Location – Cigarette Butt (Filter Area)
Source of DNA
Saliva
- Used Stamp/Envelope seal
Source of DNA
Saliva
Location – Moistened Area
- Tape/Ligature
Location – Inside/Outside Surface
Source of DNA
• Skin Cells
• Sweat
• Saliva
- Bottle/Can/Glass
Location –
• Mouthpiece
• Outer Surface
• Rim
Source of DNA
• Skin Cells
• Sweat
• Saliva
- Bed Sheets
Location – Surface
Source of DNA
• Sweat
• Saliva
• Hair
• Blood
• Semen
- Used Condom
Location – Inside/Outside Surface
Source of DNA
• Semen
• Vaginal / Rectal cells
- Fired Bullet
Location – Outside Surface
Source of DNA
• Blood
• Tissue
- Bite Marks
Location – Surface Of Skin
Source of DNA
Saliva
- Fingernails
Location – Scrapings
Source of DNA
• Skin Cells
• Sweat
• Blood
• Tissue
Discover more from Forensic's blog
Subscribe to get the latest posts sent to your email.
