Introduction:
🔎Biological evidence is a type of Physical Evidence which contains DNA. Biological evidence are very useful to connect offender to a crime scene. Sometimes these evidence can be hard to find by naked eyes. DNA can be found on many things or objects.
Where to find Biological evidences on objects are 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
• Ear piece
• 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
