@Dogman15
I see

@DBFanW22!
Maybe they made the graphics manually.

Where is such a website for mapping genealogy?

@Background Pony #6E84: “she was most likely screwing around […] so this probably isn’t canon”
 
She explicitly said she was screwing around and that it wasn’t even canon to her.
 
Sheesh, why are bronies so intent on believing the Cake twins can’t possibly be the children of two earth ponies? They’re Technicolor magic ponies in a kid’s show, for crying out loud!

Well, at least one of them isn’t his. Knowing that Lauren Faust is off the show, and she was most likely screwing around or drunk so this probably isn’t canon, but on a twitter fest, she said that Mrs Cake has many suitors other than her husband. It’s highly possible that Pumpkin is Mr Cake’s, but Pound is another stallion’s, despite them being twins (as long as she conceived them both on the same day at least).

@Background Pony #BC2B  
We aren’t saying that the Earth Pony gene is dominate, but by any strech of actual genetics, if those are indeed the closest Unicorn and Pegasus relations the Cakes have, then, even not taking into account that one isn’t even a blood ancestor, that being born as even one, let alone both, would be a statistical impossibility.

for some of you how do even know earth pony is a dominate gene, forget the fact that you see them the most. blame the animators this isn’t scripted or written some where in Hasbro saying earth ponies are dominate gene( they did that because it was probably quicker to animate). no one thinking about to hard like that , the real reason why did this was to show the ponies are more connected than you think. they easily said no lets make the foals earth ponies but they didn’t. only the fans are taking this to seriously, i would thought just because they were animals you guys would let it slide, but no you have to dig to deep in to things.
 
whats more funny is in the fandom everyone focus their attention of Pegasus and unicorns. the fact they blow a fuse and question why an earth pony give birth to something that is not an earth pony;but they dont do it when its an Pegasus or unicorn gives birth to unicorn or Pegasus is retarded.

@GLARGH  
I didn’t say diluted, I said replaced. If the genes are so recessive that they wouldn’t show up more recently in their geneology, then they would have been replaced long ago. Genetics isn’t like mixing paint, but it does have a set of priority, and if those genes are, again, so recessive, then they would have long ago been replaced by more dominant recessive genes, since only so many for a certain trait can be passed on, meaning they can’t be passed on indefinately. Eventually, that trait will go extinct.
 
But yes, the Cakes are covering something up. Not saying the buns in her oven are from a different baker, but there is something suspicious about the recipe.

@Background Pony #65FE  
Recessive genes don’t work that way. You can inherit them an infinite amount of generations back, all without ever knowing until they are combined into a matching set in your children.
 
Genetics isn’t like mixing paint. It’s matching defined pairs at random, often with the effects of only one half of that pair being visible. Well, it’s more complex than that, but I’m simplifying.
 
It doesn’t matter how many generations back it is. Yes, there would have to be ancestry on the side of both Cakes, but it could be infinitely far back where they might not even know who the source could be.
 
Recessive genes aren’t diluted over the generations. It has just as much chance of being passed on as anything else. Of course, if they had more Earth Ponies in their family tree, there would be a high chance that randomization would push it out, but that’s no guarantee. Also, those other Earth Ponies might have some unknown ancestry themselves.
 
What the Cakes are saying is bullshit, don’t get me wrong, but it’s theoretically possible for both children to be both of theirs.

@GLARGH  
But at the same time, there’s only so far back you can inherit recessive alleles without them being phased out or overridden by dominant alleles or even more prominent recessive ones, especially for something that must be so major as the Pony subspecies.
 
The unicorn side maybe be thinly possible, but the fact that the closest pegasus relative is not only twice removed, but six generations back, would be any direct blood related pegasus they may theoretically have is so far removed that a recessive gene being shown as dominant now would be statistically impossible.
 
In addition, there would still have to be a close relative on Cup Cake’s side for the recessive alleles to properly pair and form a unicorn, which wouldn’t be possible if her non-eath-pony allele was a pegasus, and vice-versa for Carrot Cake needing a pegasus gene for Pound to be made.
 
Then again, that would be supposing that any “Tribe” gene is dominant over the other, which would in this case boil down to the “Earth” gene being most dominant, which would mean they would far outnumber Unicorns and Pegasi. And if these ‘tribe’ genes were equally dominant, then the whole argument goes out the window and there would have been non-Earth family members a lot closer, and there would be more instances of co-dominant phenotype traits, or those with traits of multiple tribes (Not only Alicorns, but pegasi with earth pony powers, etc), which we don’t see and have not seen as being a trait of birth, but instead of alteration later in life

@Background Pony #65FE  
Actually no.
 
That’s like saying that in order to have six fingers, you need a recent relative that had six fingers. Recessive traits can hid in families for a long, long time. That’s why most societies frown upon incest, as that has a way of bringing those genes to the surface.
 
In this case, these pony parents are being morons. The obvious pegasi and unicorns might not even be the source of the genes, which could go way further back than they even know or have records of.

@GLARGH  
Yeah, but I think for the two dark haired folks to have ginger kids, there would have to be gingers in their families a lot more recently than 6 Generations, and, as said earlier, the pegasus, if it is their closest familial relation, has no BLOOD relation, otherwise it would be the grandparents at the peak who were pegasi.

Fun fact!
 
This episode suggests that Unicorn and Pegasus traits are recessive, meaning that the requisite genes would have to be present on BOTH sides of the family.
 
Now, the average person isn’t too familiar with their precise family tree OR how genetics work, but you pretty much can’t magically inherit a recessive trait from ONE side of the family.
 
However, it’s possible that both Cakes had distant ancestors who were unicorns and pegasi, but whose traits simply wouldn’t show until those genes came together.
 
This really isn’t any more surprising than the children of two dark haired people turning out ginger. It’s entirely possible, if unlikely.

For the record, Charlotte Fullerton wrote this episode.

@Background Pony #EB63  
That probably applies to most of Equestria, really.

Those Ponyville ponies are exposed to invasive, subversive and plain chaotic magic on a daily basis, especially since they got that new librarian.
 
Their genome is shot to hell and back.

wat

@Scrounge  
Ours is the woofer that will Wub the heavens!

@Scrounge  
Alrighty :P :)

@Background is Best Pony  
I’m worried about how that ends…  
 
…Yeah, that, let’s avoid that one.

@Scrounge  
Fanfic fuel!

@Background is Best Pony  
Or there was a mix-up at the hospital.

@Scrounge  
Yup.  
Maybe Vinyl’s her cousin.

@Background is Best Pony  
With “Why does Viny look like Shining” as a side question.
 
I didn’t bring up Twilight because I figured I’d get nowhere with it, since her mother’s got a partly-purple mane and they look the same in every way besides color.

@Scrounge  
 
 
Shining isn’t too far-fetched, actually. His coat is a light shade of his mother’s, his mane is a lighter shade of his father’s, with the extra stripes, and his eyes come from his mom. Twilight is either A) adopted or B) had genes skipping generations. She obviously got straight hair from her mother, as well as the indigo color, though it’s darker than her dad’s. Her eyes and coat might come from a “Granny Sparkle” of some sort.  
So, the question isn’t why does Shining Armor look more like Vinyl, the question is why doesn’t Twilight look like the rest of her family?