Re: HYB: SA Modifier Gene?

--- In SpaceAgeRobin@yahoogroups.com, "phantomfyre" 
<phantomfyre@y...> wrote:
> In post #560, Walter wrote:
> "Randy, this is interesting.  What you are saying here of your 
> experience says [the SA trait is] dominant.  But others say it 
shows 
> up in crosses between 2 non-SA.  This would not typical dominant 
> behavior."
> 
> 
> What is the SA gene is a dominant modifier of some sort? If it's 
> present, SA traits will appear, but if it's not present, SA traits 
> won't? .................................                           
> I came to this thought through my "knowledge" of horse coat color 
> genetics. For example, black is dominant. But if you stack a bay 
> modifier on it, you get a bay horse (some shade of brown coat with 
> black points (mane, tail & lower legs). Bay is a dominant modifier. 
> However, to get a bay, the black gene MUST ALSO be present - that's 
> where the black points come from......... 
> Diana
OK, Diana.  what you say is plausible, as are several other 
scenarios.  What we need is more data, which is where SAGE comes in.
Walter


 

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