One must understand the structure of a particular protein, tyrosine (an enzyme often mistaken for the albino), breaks up the amino acid tyrosine as a first step in producing melanin, the major pigment in mammalian skin and hair. In an albino, this enzyme cannot be produced, and as a result melanin cannot be produced. 

 

Although the coat is solid white, the skin is flesh colored, the eyes are dark and the nose, lips, eye rims, nails and pads are black which shows that tyrosine is present.

 

If the tyrosine is not present, then the pigmentation could not be generated and in this case, there is a probability of albinism. 

 

Alblinism is not just being true white, its a loss of pigmentation which can happen to any breed of any color.  Click The Color Genetics for more information. 

 

It is also a misunderstanding that the white schnauzer have trouble in the sun.  Some white schnauzers have an even darker skin than the black schnauzer. 

 

Another misconcept is that white schnauzers are inclined to deafness, blindness and disorders.  That is completely not true. Deafness and blindness are sometimes caused by the 'Merle'. (Mm)gene which when doubled, creates white dogs (or mostly white with small patch of color) these double MM are the ones born with the eye and ear abnormalities. Miniature schnauzers do not carry this gene.