[Rustybucket]

Actually your incorrect, as your no doubt aware, there are 3 layers to hair, toe, and finger nails, The root of each can deliver usable DNA, the Root of Hair and nails is connected to the blood stream and as such yields DNA of the owner, I do agree that the cuticle and hair shafts are useless, except for ID of hair color...
http://www.forensicmag.com/articles/2013/04/challenges-dna-testing-and-forensic-analysis-hair-samples

[MMaschin]

Yes.

I was under the impression, based on the context used, that it was the keratinized hair and nail tissue that was being discussed. If one was to go to a hair salon, and pick up cut hair or cuticle's they would have keratin with no nuclear material with DNA.