What does single factor (SF) mean?

[FloorCandy]

I saw an older post where someone said they bred a single factor (SF) Tibetan to something else to get some color, I’m just wondering what single factor means.

 

[Kale the Quail]

@Nabiki

 

[Nabiki]

A single factor gene would be a single major gene that determines a character. Did you ever study Mendel's genes with peas in grade school?

Here's an article that explains it a bit.
https://www.ncbi.nlm.nih.gov/books/NBK132145/

 

[FloorCandy]

Ok thanks, I know what single factor inheritance is in general, I’ve just never heard someone refer to Tibetan or any color of quail as single factor, so I thought it might be a colloquialism used to refer to a type of Tibetan. I feel like in other species of pet birds like canaries and various parrots, red factor, white factor etc is thrown around a lot by people emulating experts and might not be accurate in all cases.

 

[Fenrisulfr]

I am trying to get deeper into genetics more and more.

I had Biology/Chemestry as main subject in the german Abitur (kinda advanced highschool) and I am updating my knowlege more and more, as this was state of the late 80ies.
Genetics made a huge jump the last decades.

I just read today an article, which stated that for example the Pie Bald (Tuxedo/Panda) factor is located in 4 different genes. So definately not SF