Hair and Fibre Flashcards
1
Q
3 types of Natural fibres
A
cotton, silk and wool
2
Q
3 types of synthetic fibres
A
polyester, nylon and acrylic
3
Q
What is the outer part of the hair called which is often scaly?
A
The outermost layer is the cuticle which helps anchor the hair in the follicle and protect the middle layer of cells called the cortex.
4
Q
When can you get DNA evidence from hairs?
A
The very end of the hair contains skin cells which can be used to find traces of DNA.
