Coat Color Prediction Game - German Shepherd Dog Forums
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post #1 of 15 (permalink) Old 02-07-2018, 09:32 AM Thread Starter
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Coat Color Prediction Game

Coat color genetics has always fascinated me! Anyone want to play along and take a guess as to what colored pups these two dogs will produce? Just when I think I have the coat color genetics figured out, I don't! There's always more to learn...Please forgive me if I come off as ignorant, but this has always seemed to be a guess for me and it's fun!

Okay, so here goes...

(Dog A) Sire: Black
(Dog B) Dam: Bicolor

Sire's (Dog A) Parents:

(Dog C) Sire: White
(Dog D) Dam: Black

Dam's (Dog B) Parents:

(Dog E) Sire: Sable
(Dog F) Dam: Black

What color pups will dogs A & B produce?

"Dogs are simple creatures...it is us who complicate them."
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post #2 of 15 (permalink) Old 02-07-2018, 09:40 AM
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Quote:
Originally Posted by Kelly_Jean View Post
Coat color genetics has always fascinated me! Anyone want to play along and take a guess as to what colored pups these two dogs will produce? Just when I think I have the coat color genetics figured out, I don't! There's always more to learn...Please forgive me if I come off as ignorant, but this has always seemed to be a guess for me and it's fun!

Okay, so here goes...

(Dog A) Sire: Black
(Dog B) Dam: Bicolor

Sire's (Dog A) Parents:

(Dog C) Sire: White
(Dog D) Dam: Black

Dam's (Dog B) Parents:

(Dog E) Sire: Sable
(Dog F) Dam: Black

What color pups will dogs A & B produce?
What are the parents of the sire and dam? They each have one gene from each parent. The black is a/a. What is the bi-color? What is the white? What is the sable?

For instance, my dogs parents are
dam: aw/a
sire: a/a
His litter was all blacks and sables because those are the only letters in play. There can only be a black if the other parent carries an "a" gene because that color is recessive. Sable is dominant so can only be produced if one of the parents is "aw".

And then the white. White is not a color. White is a masking gene that makes their colors white. So the dog could genetically be a black. Or a black/tan. Or a sable. And has that gene that masks all the colors. AND...then add in if there is a dilute gene that will turn them liver or blue!


You have to many unknowns in your question.




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post #3 of 15 (permalink) Old 02-07-2018, 10:15 AM
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Agreed - too many unknowns...

Color Genetics in German Shepherds
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TILDEN: Male: Blk/Red LHGSD: DOB: 12/24/06 65lbs of Love
KEYSTONE: Male: Sable: DOB: 2/11/13 55lbs of Go!!!!!
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post #4 of 15 (permalink) Old 02-07-2018, 10:21 AM Thread Starter
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Oh man! Thank you! I never had this much trouble with Lab coat colors, lol. German Shepherd colors are really interesting.

Dog C sire is white, dam is black/tan
Dog D sire is sable, dam is black/tan
Dog E sire is sable, dam is sable
Dog F sire is black/red, dam is black/silver
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"Dogs are simple creatures...it is us who complicate them."
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post #5 of 15 (permalink) Old 02-07-2018, 10:26 AM
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Dog B can not be a bi-color. That dog would have parents that are
dam: aw/aw
Sire: a/a

That dog can ONLY be a sable. "aw" is dominant. "a" is recessive.

In order for A to be black then the White in the equation has to carry a gene for black. So the white is still partially an unknown.




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post #6 of 15 (permalink) Old 02-07-2018, 10:31 AM Thread Starter
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Quote:
Originally Posted by Jax08 View Post
Dog B can not be a bi-color. That dog would have parents that are
dam: aw/aw
Sire: a/a

That dog can ONLY be a sable. "aw" is dominant. "a" is recessive.

In order for A to be black then the White in the equation has to carry a gene for black. So the white is still partially an unknown.
My mistake, they have Dog B listed as a bicolor...would she be black & tan? (Pictured) I'm confused...
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post #7 of 15 (permalink) Old 02-07-2018, 10:33 AM
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so if dog B is a sable, you are down to a litter like the one my dog came from with...

Dam: aw/a
sire: a/a

They will produce only blacks and sables. One gene from each parent
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post #8 of 15 (permalink) Old 02-07-2018, 10:35 AM
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the color of your puppy is not in question. It's the colors of the ancestry that doesn't make sense on the dam's side. E and F can not produce a bi-color. Look at the chart that Fodder posted.

Wait....I could be wrong on that. What is beyond Dog E after the sables? One of those sables could carry the bi-color gene.
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post #9 of 15 (permalink) Old 02-07-2018, 10:40 AM
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Dog B could still be black and tan or even bicolor if the Sable parent carried a recessive black and tan or bicolor gene, which could have come from either of its Sable parents.

Tom
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post #10 of 15 (permalink) Old 02-07-2018, 10:40 AM
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I need more coffee for this. Assuming Dam's lineage has a bi-color somewhere back there
and the Sire can only be a/a

Sire: a/a
Dam: at/a
The litter has the potential to produce bi-colors and blacks only




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