I have a nice little blue roan girl that I would love to try to duplicate or try my hand at merles with. How can I make this possible? She was in a feeder bin so I don't have information on her background.
Where did you find her in a petstore? They're not very common in petstores in the US. You may have a variegated or a splashed on your hands, which can look roan.
I don't think you can "create" merle out of roan, sorry. The merling is where the roan is "turned off" and if it's not already turned off by the heretofore scientifically undescribed modifier/gene, you can't do it.
I assumed you could "create" a merle through a roan based off other websites which have described a merle mouse being one that is roan with solid patches. My mistake. I found her at a little hole in the wall pet store in town.
Lol yep from the feeder bin. Only one remotely looking like her but I may have to frequent that shop and see if any more show up. What should I take this to breeding wise? If she is a splashed that means the gene hasn't been isolated yet (if there is a gene at all) right?
Of a C-locus dilute, yes. Another would be beige, siamese, and himalayan.
Any animal who has two C-locus dilute alleles excluding "c/c" will show splashed, to varying degrees as long as other inhibiting factors are not present (such as recessive yellow--recessive yellow can make the splashes very faint or invisible).
If the mouse is C/* and splashed (Spl/* C/*), it will not show splashed and will be indistinguishable from a mouse who is C/* and not splashed (spl/spl C/*).
It's a gene, somehere, somehow; by now there are probablly quite a number of transgenic combos that have showed up in the pet and fancy mouse supply. I've been working with a line that carries something like this, but not 'zackly like this. On top of every other weird thing about transgenic meeces, there's a type that produces hermaphrodites(XXY), and a type that translocates portions of the chromosome 7 that affect the c-locus and a-locus, and whether any or all of these qualities are present in any given odd unclassifiable mousie is anybody's guess. Someone has yet to take a look in the genes we find in the mouse fancy and attribute the correct genotypes to the phenotypes.
(They're Pinky, they're Pinky, they're Pinky and the Brain, Brain, Brain, Brain....)