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#2 - emberstar (07/05/2013) [-]
Actually this is quite possible, as the coat color in Labrador Retrievers is controlled by two separate loci- B and E. The "E" locus controls dilution and causes yellow labs to have their coat color.

"B" represents the dominant trait, and whenever it is present (with the exception of dilution in yellow labs) the dog is a black lab. "b" represents the recessive trait, and whenever the genotype is "b b" (with the exception of dilution in yellow labs), the dog is a chocolate lab.

Black Labs' genes would look like this: B _ E _
Chocolate Labs' genes would look like this: b b E _
Yellow Labs' genes would look like this: _ _ e e

So, in the case of the picture the mother would have had the genes _ _ e e.
The father could have been either a black lab or a chocolate lab, but if he was a chocolate lab the mother's genes must have been B _ e e.

I actually took a class last semester that focused completely on genetics, and this was the only part we studied for a third of the class.

(There is also a second type of yellow lab, which is unregister-able and called "Dudleys". Their genotypes are bbee, and they have either pale or chocolate pigment or an absence of skin pigment. But the above female is obviously not a Dudley.)

tl;dr Yellow bitches can have black pups, even when bred to a chocolate dog, and this is because of genetics.
User avatar #64 to #2 - xdeathspawnx (07/30/2013) [-]
lol I remember doing an assignment on this exact topic in honors Bio.
#60 to #2 - anonymous (07/05/2013) [-]
if that's true, then college-level genetics must be a sad class. I'm in the 8th grade in TN, and they taught us this last year in science class.

PS: sorry, for the anon statement, I don't have a FJ profile.
User avatar #62 to #60 - emberstar (07/06/2013) [-]
This was a portion of the class. We also studied how to select and breed for certain traits, the heritability and repeatability of traits, population genetics and how they are used in the food animal industry, qualitative and quantitative traits and how to select for them, selection of traits to either improve or change certain qualities, multiple trait selection, Mendelian genetics (similar to above, which was the introduction/first third of the class), and how this all is applied to different industries.

The class was "Principles of Breeding and Genetics", but it was more like "Principles of Genetics, Selection, and Mating"
#48 to #2 - kidsquicker (07/05/2013) [-]
Have fun hanging with Bill and Neil, you've earned it.
#46 to #2 - theronj (07/05/2013) [-]
MFW i read this
MFW i read this
User avatar #41 to #2 - mondominiman (07/05/2013) [-]
What I learned on funnyjunk is....
#40 to #2 - bababadsheep ONLINE (07/05/2013) [-]
I thank you for taking your time to educate people. You are a hero of the rarest kind. Stay classy.

pic unrelated
#33 to #2 - yisumad (07/05/2013) [-]
Comment Picture
#30 to #2 - hirollin ONLINE (07/05/2013) [-]
Comment Picture
#24 to #2 - aczzoh (07/05/2013) [-]
MFW genetics
-5
#22 to #2 - nylak has deleted their comment [-]
#15 to #2 - kez (07/05/2013) [-]
Two black people can have white children.

And two white people can have black children also.

But its super rare, happens though

Must be pretty awkward for them
User avatar #32 to #15 - matriculator (07/05/2013) [-]
That absolutely impossible. The whitest the child can be is 50% given that both parents had white ancestor and it was one hell of a recessive gene, at least if you're taking about the "race".
User avatar #17 to #15 - tabarzins (07/05/2013) [-]
also albinism & melanism
#10 to #2 - aznprodigy (07/05/2013) [-]
veterinary science FTW i was going to post similar but shorter genetic explanation but good on you for this
#9 to #2 - sigmasixteen ONLINE (07/05/2013) [-]
At first, i thought the picture was a doggy three-way... wow i should get off.
#49 to #8 - royrogersmcfreely (07/05/2013) [-]
**** yeah. good burger was a bitchin movie
#16 to #8 - tehphire (07/05/2013) [-]
this picture has never been more relevant
User avatar #5 to #2 - chuffberry (07/05/2013) [-]
to go even further, since it was such a large litter with every single pup being black (and i'm assuming the joke in the picture means that the father was brown), the genotypes would have to be bbEE for the father and BBee for the mother
-3
#3 to #2 - thekillerwalrus Comment deleted by thekillerwalrus [-]
User avatar #4 to #3 - emberstar (07/05/2013) [-]
Did they only have yellow pups? Either way it means that the chocolate lab's genes were bbEe and the black lab's genes were B _ Ee, and the (yellow) pups inherited an "e" from each parent.

I'm not too fussed about killing the joke, I thought it was some useful information to know. There are other colorations, such as silver, that are possible- but I don't know much about them, other than they are usually more difficult to breed.
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