(a)   the region of a hair located outside the medulla that contains granules of pigment

(a)   the tough outer covering of a hair that is composed of overlapping scales

(a)   a method of separating chemicals to establish their quantities

(a)   the actively growing base of a hair that contains DNA and living cells

(a)   part of the hair above the follicle; contains mitochondrial DNA

(a)   a type of fibrous protein that makes up the majority of the cortex of a hair

(a)   the central core of a hair

(a)   bits of pigment found in the cortex of a hair

(a)   genetic material in the mitochondria of the cytoplasm of a cell; only inherited from the mothe

(a)   genetic material in the nucleus of a cell