an experiment in which only the manipulated and responding variable are allowed to change and conditions are kept the same.
According to the Thesaurus there are none. However, the meaning of what can be the similar to define. E.g. what color is her hair or define her hair color.
Hair can be used for a DNA profile.
Define, did it.
It is not it just simply is not
Mousse provides body to the hair. It can be used to achieve volume for those with straight hair. It can also be used to define waves or curls on textured hair.
You cant get your hair naturally curly if you don't have naturally curly hair. However; if you do have naturally curly hair you can define your curls with a leave in conditioner.
-.-
DNA
We cannot identify a person specifically with hair alone. Even if their is mtDNA, it isn't good enough-DNA is class evidence anyway.
Root of the hair containing protoplasm
I think you are trying to define a beard.
There is no evidence of a link.