I know that its odds and the who genetics part but the pied lined or tacks is whati hear ppl talk about on here alot. And then on youtube videos ppl liek ralphdavis for one has videos where there are a few lighter normals he says are het and i sen other less reputible ppl goign along the same guide lines, i wondered if there was anything visual , pieds have track that a + in my books lol.