Literature
Explaining the Cake family's genetics
Title: A dissertation on the hypothetical genetics of the Cake family
There has been dissension among the ranks of bronies as to whether the Cake parents, who are Earth ponies, could produce a pair of fraternal twins with one being a pegasus and the other a unicorn, given only one distant ancestor carried a single representative phenotype of each on either side.
I have developed a plausible pattern of inheritance to explain this seeming incongruity.
Let's say that pegasi and unicorns were genetically designed, using earth pony as the genetic base, by the alicorns playing god on the mythical continent of Atlantis. The easiest way to add th