African Wild Dog, Anyone? (Genetics question)

[Laurelin]

http://mireillespa13009.skyrock.com/3069791091-125439-Piktus.html

Okay maybe not. I've seen a few of these 'mosaic' labs here:

http://www.blueknightlabs.com/content/view/167/143/

http://www.woodhavenlabs.com/mismarks.html

http://greenstonelabradors.com/understanding-mismarks-in-the-purebred-labrador/

But does anyone know of this happening in other breeds? I've only ever seen examples of this in labradors.

 

[stafinois]

I've heard of it in Goldens, but it's been Labs that I've seen pics of. I've actually seen a couple in person, but not as dramatically marked as that one. He's amazing!

 

[Maliraptor]

Oh gosh. Ready? (Ducks for the shots being fired)...WOW that is so cool looking.

 

[Maliraptor]

There is the Panda mutation in the German Shepherd, that is a hot topic. SUPPOSEDLY a true mutation.

 

[Rolu]

I want one. I love the look of them, especially the one in the first link!

 

[lizzybeth727]

Wow, how gorgeous. Almost has a merle look.

 

[Toller_08]

I'm not sure if that happens in other breeds or not. And I know it's not really right, but I love the look of mosaic Labs. So pretty. I saw a black and tan service Lab the other week that was also rather neat.

 

[Laurelin]

The first dog is a little busy to me, but I love this dog's look: http://trinitylabstexas.com/wp-content/uploads/2008/03/2344823615_defb202858.jpg

I'd just like to see examples in other breeds.

I've seen chimerism in other animals, but this is a different phenomenon?

 

[Equinox]

Oh wow, how cool! I have heard of mosaic Labs of course, but have not seen a pattern like that. That is a gorgeous Lab all around, actually.

There is the Panda mutation in the German Shepherd, that is a hot topic. SUPPOSEDLY a true mutation.

It's no secret that I'm not a big fan of Pandas, but I'm don't believe the original Panda patterned Shepherds were mixed - they were very true to type and many are lovely structurally.

The distinct tri-color pattern is growing on me.

 

[AdrianneIsabel]

Do want.

 

[Laurelin]

I think Panda shepherds are gorgeous but I'm pretty much of the notion that any dog looks better with white markings. XD They look like border collies, that's probably why I like them.

But are they trying to make them a new breed? That I don't get.

 

[Laurelin]

Golden:http://retrieverman.wordpress.com/2011/06/30/the-black-spot-phenomenon-attacks/

Saluki:http://al-sarab.webs.com/Mamnouna/Cheschmesch4.JPG

 

[Laurelin]

Found another golden: http://www.ashgi.org/color/Aussie_somatic_mutations.html

 

[Baxter'smybaby]

is it wrong of me to want that first lab? Love the looks of him!

 

[Aleron]

That is really neat looking! I am a fan of "oddities" in breeds

It's no secret that I'm not a big fan of Pandas, but I'm don't believe the original Panda patterned Shepherds were mixed - they were very true to type and many are lovely structurally.

I agree with this, not sure why people have such a hard time believing those dogs are GSDs. They aren't even tr-color, they are GSD colored with white.

 

[joce]

The mosaic labs are chimeric right? Why are they not called chimerics? No matter how much you breed them they will never look like that. Or is this a entire separate mutation? Shows up in horses,even in people but usually can't tell. I watched a show where a mother had to prove she was mom even when they had video of her having her kids. It was nuts.

Here is a horse one
http://instructor.mstc.edu/instructor/MKundinger/oneinamillion.pdf

I think the lab oddaties are neat.

 

[Laurelin]

From my brief readings it seems like it's a different thing. The labs have been DNA'd to only contain one set of DNA, unlike a chimera. Here's a quote from my previous link:

This is a photo of Spotty, a registered Labrador retriever courtesy of the Matessers, owners of a kennel in Italy. Spotty's mom is a black Labrador, and his dad is a yellow Lab. His siblings are all either yellow or black. DNA testing was done to verify parentage. But during Spotty's embryonic development a skin cell mutated from ee (yellow) to Ee (black). All the descendants of that mutated cell produce black pigmentation. Could he sire black puppies in addition to yellows if mated to a yellow? Possibly. His left testicle is black; if the cells inside it are of the same origin as the black cells on the scrotum, they would produce sperm containing E as well as e.




Here is a closeup of Spotty's face as an adult. He is clearly a mosaic of yellow and black rather than a black pinto with the white spotting gene. He is actively shown in canine sports, where his dual color catches a lot of attention. It is equally possible for a dog to be a chocolate/yellow mosaic or a chocolate/black mosaic. Another possibility is that two embryos merged very early in development, producing a Chimera. But DNA tests reveal only one dog present.

 

[Equinox]

They aren't even tr-color, they are GSD colored with white.

Oh, my mistake! You are absolutely correct and that was inaccurately phrased on my part. I was trying to distinguish between distinctly patterned Pandas and the more "speckled/ticked" Pandas, if anyone knows what I mean, LOL

For example, these dogs are lovely

(not so much the eyes in my personal opinion, I can't get used to blue eyes in GSDs)

 

[ravennr]

HOLY COW.

I have been saying for YEARS that I wish there were a breed that mimicked the AWD coat.
I know these are technically faults, but WOWOWOWOW. I LOVE them!

 

[SevenSins]

From my brief readings it seems like it's a different thing. The labs have been DNA'd to only contain one set of DNA, unlike a chimera. Here's a quote from my previous link:

"Mosaic" Labs are caused by somatic mutation. Essentially what happens in the case of yellows with the black "mosaic" pattern is, a pigment cell mutates and instead of being *"ee" it becomes "Ee"; Every cell formed from that original mutated cell is also "Ee," thus the random pattern. Being a mutation on somatic cells, it's NOT something that can be bred for.

*Labradors are all genetically black. "ee" causes the inability to produce black pigment in the coat, and the coat "defaults" to red. "Ee" would be black, carrying one copy of the recessive gene for this restriction, but the coat remains black.

One of these days I'll dig out the work I did on the offspring I purchased by a rat named NLR Solaris. Fun stuff.