Lucy and Maria Aylmer are twins, born at the same time from the same parents

Occasionally, biracial twins are born with clear skin-color differences. It’s a rare circumstance that’s been termed having “biracial twins.” Dr. Jim Wilson of the University of Edinburgh told the BBS back in 2011.

"Our skin colour is determined by a number of gene variants - at least 20 variants, I would say, probably quite a few more than that," says Dr Wilson. "Some of these we know, and some of them we don't yet know, and at each of these genes, that are influencing the colour of our skin, there tends to be two or more variants. One of which is producing a darker skin tone, and one of which is producing a lighter skin tone."

The beauty of it, as with any little baby, is that they’re babies!

x In 2006, the Hodgsons gave birth to mixed-race twins. Sisters Kian and Remee were born within 1 min. of each other. pic.twitter.com/7G7tEXzMN6 Ã¢ÂÂ That Really Happened (@ThatRlyHappened) December 16, 2013

They’re wearing the same dresses and their hair is the same!

The newest set of biracial twins to get some national attention are Whitney Meyer and Tomas Dean’s two new additions to their family, Kalani and Jarani.

"At first when they were born, I wanted to believe it but it's so rare I didn't think it'd happen to my twins!" Meyer told CNN affiliate KHQA . "But sure enough they're biracial twins!” Meyer is white and Dean is black, which explains part of this phenomenon. The twins are dizygotic, which is just the scientific term for fraternal twins . So each baby girl started out as a separate fertilized egg (monozygotic, or identical twins, start off from the same egg and then divide).

Here’s the payoff.

x Twins Kalani and Jarani Dean pictures https://t.co/KcfnGL3Epi pic.twitter.com/23pMpveq90 Ã¢ÂÂ infowe (@infowe) January 25, 2017 And here is Lucy and Maria Aylmer (pictured at the top of the diary) through the years. x Biracial Twins Lucy and Maria Aylmer pic.twitter.com/3uq5eP1iCf Ã¢ÂÂ Mixed Girl Problems (@mixdgrlproblems) July 23, 2016 Here are another pair of little ones. x Black and white twins from same egg https://t.co/5ueipU2Xh1 pic.twitter.com/iM2puAFJ8O Ã¢ÂÂ Times LIVE (@TimesLIVE) February 26, 2016 And here are James and Daniel Kelly. x Black and white twinshttps://t.co/3SCZR11N72 pic.twitter.com/AEdTnljLyi Ã¢ÂÂ The Hon. M C G Young (@MCY1X) June 9, 2016 In the end, the two kids in every picture will be their own people, with different interests and different talents. But one thing we can all know about these kids is that they understand, down to their tiniest genetic atoms, that race is just a construct because in the end we are all brothers and sisters in this life.

Via