T-positive and T-negative??????/

[nuno]

Hi everyone,

I'd like to understand a little more on T+ and T-

Tyrosinase-negative - an albino whose cells lack tyrosinase, producing a white and yellow/orange snake with pink eyes. A separate albino mutation from tyrosinase-positive.

Tyrosinase-positive - an albino not able to synthesize melanin, but capable of synthesizing tyrosinase, which results in lavender-brown skin color.

What are a couple good examples of each?

Thanks