Posted by:
Mahlon
at Sun Jan 22 21:23:06 2006 [ Email Message ] [ Show All Posts by Mahlon ]
A little clarification as I understand it regarding the Black/Cinnamon morphs(by the way not going to refer to them as Black Pastel, or Cinnamon Pastel since that tends to lead to confusion).
Firstly, from most of the pictures I've seen of the Supers(homozygous) from both Cinnamon and Black lines look identical regarding the pattern mutation (both lines create a patternless animal) but differ slightly in the color/hue, one being more black, while the other retains the brown/cinnamon color.
The major differences seem to be in the heterozygous forms of both, it is usually possible to tell the difference based on pictures alone as to what line(see hunters guide to cinnamon/black pastels). The pattern differences are noticeable here between the different lines(in the het form)but there definitely is a difference genetically that seperates the lines from each other. This difference reminds me of the variability between the two lines of "Clowns" that I have seen, one being way more reduced pattern than the other.
Now, it is hard to say whether the differences between the two lines is due to a) difference between the two genes, that causes a slight difference in the expression of them or b) the non-cinnamon/black genes that are linked to each respective line cause the difference in the phenotype.
Also, another thing regarding the cinnamon lines, I believe that they have proven to be compatible, meaning a black X cinnamon = Super Cinnamon/Black. The next question would be taking this hybrid Super Cinnamon/Black and breeding it to a normal, will it produce all cinnamons or all blacks, or a combo of both? Should most likely throw a combo of both, though visibly distinguishing between the two from same litter might be quite hard indeed.
Now as far as the pewters, whether it is a black or a cinnamon crossed to whatever type of "True" pastel will produce a pewter type animal, all it takes is one pastel gene, and one black/cinnamon gene, both being expressed within the same animal.
As far as the silver streak, if I remember correctly it is a Homozygous Cinnamon that also has one pastel gene being expressed(although this could be the other way around, not sure exactly), so take a pewter, breed it to a super cinnamon, and you get silver streaks, or bullets or whatever!
-Dan
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RE: So call me stupid - Mahlon, Sun Jan 22 21:23:06 2006