Talk:Cat coat genetics
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[edit] comment
Wouldn't it be better to explain the Orange/Black genes with better terms than O and o. The way I learned it was X^O and X^B. That way it showed it was on the X chromosome and that it was incomplete dominance. - not signed
- O and o are the standard terms used among cat breeders. We're not making the terms up, we're reporting them. - Nunh-huh 00:25, 2 Jun 2005 (UTC)
Where does one take that the O gene has incomplete dominance? I was always taught it is completely dominant.Ramdrake 16:48, 12 October 2005 (UTC)
I, too, like the X-superscript system, but I don't like using B vs. O. I see the letter B and think TRP-1. More correctly it should be upper-case and lower case O as the superscript, but given the limitations of the medium, I'll accept O/o. NOT an incomplete dominant but a sex-linked gene. And definitely NOT "the black" gene. They are getting close to finding it, BTW. Not MCR-1 as everyone (including me!) thought, though. Probably Melanocyte Stimulating Hormone, with the wild-type enzyme competing with ASIP on MCR-1, while the mutated form is non-functional --Lorraine
[edit] White Spotting Gene
The white spotting gene does not affect eye colour in cats. The colourpoint genes are the genes responsible for creating the blue eyes in cats. Snowshoes, Ragdolls and Birmans are examples of cats that have (or can have) the white spotting gene (ss) and the colourpoint (cscs) gene. The blue eyes comes from the colourpoint not the white spotting so it seems misleading to have a paragraph about ss and then talk about blue eyes. Is it okay for me to go ahead and change this? Cuddleton (talk) 08:00, 3 April 2008 (UTC)
[edit] Freckles
BTW, Where did THIS come from? "Freckles are spots of pigmentation of the underlying sepia color of the cat (see B gene) and can occur on the lips, nose, or ears. The W gene does not prevent freckles or alter eye color, although most cats with this gene have either blue or orange eyes."
First of all "sepia" is a TICA term for a cbcb cat. The B (tyrosine related protein-1) locus is the black/chocolate/cinnamon series. The W gene most definitely is capable of altering eye color through melanocyte apoptosis!!
"Freckles" are simply hyperpigmentation and/or somatic mutation and reversion to wild-type in phaeomelanistic cats (the black spot on the red cat syndrome). In white and white spotted cats, surviving melanocytes can migrate just about anywhere and create a small spot of color. --Lorraine
[edit] sources
The article haa been tagged for a year, but there ARE sources at the bottom of the page. Should I go ahead and remove? Kuronue 15:54, 27 June 2007 (UTC)
- Considering the strength of these sources, I'd say go ahead.--Ramdrake 15:56, 27 June 2007 (UTC)
[edit] useful separation?
- Breeders usually find it useful to identify and separate cats with tabby genes ...
Why is such separation useful? —Tamfang 03:35, 4 July 2007 (UTC)
I've worked a bit on this section. I believe the intent was to identify, not separate, tabby cats. - Lorraine —Preceding unsigned comment added by Featherland (talk • contribs) 23:44, 7 September 2007 (UTC)
[edit] Maltese dilution?
I was expecting this term to be mentioned, at least. Eroica 11:57, 27 September 2007 (UTC)
