Identical twins have babies with identical twins, making their children biological siblings

The Sealbys are one big happy family. Venessa and Lucas are parents of 5-month-old daughter, Adrian, while Kerissa and Jacob share Sophie, 19 months. With Venessa and Kerissa being identical twin sisters and Lucas and Jacob being identical twin brothers, Sophie and Adrian are cousins, but also genetic siblings known as quaternary #Twins. Quaternary twins occur when one set of #IdenticalTwins has children with another set of identical twins. #TODAYShow

[@Nariethelle]

The genes are going to be super strong throughout the family

[@Dawoudkhalifa]

Why?

[@sallycanfield2775]

My fraternal twin boys don't look alike at ALL! But they scored the same score for all achievement tests at school!❤

[@AllThePeppermint]

That's the thing about fraternal twins-they have only as much chance to look alike or different than any other sets of siblings.

[@terrellmattress1778]

Beautiful, but please pick the baby head up😅

[@weoutside.99]

So neither one had twins 😂😂 guess they canceled that gene 🧬 out

[@Everyday_Eva]

Good thing cousin marriage isn't normal anymore, then they'd be basically marrying a sibling😮😂❤

[@wendyjoseph5325]

Patty Duke

[@sallycanfield2775]

Patty Duke- grown up now!!!❤

[@bethsteyer5440]

Cool! I think the future looks great for y'all.

[@coty38200]

qué guapos todos

[@maryjaneedwards]

But wait if your sisters husband is your brother in-law doesn't that make your brother in-laws brother your brother too?

[@AllThePeppermint]

No. I wish I had a diagram to show you, but I don't. It's no different than if any other sets of siblings married a complementary pair of siblings from another family.

[@nowayjose584]

My mom and my aunt married the same man and had children with him. He is my dad and my cousins from my aunt are my siblings also. We are full blooded and we have same dna...

[@anagabriel7309]

No way Jose

[@nowayjose584]

@@anagabriel7309 😂

[@AkitaMix]

not siblings if your mom and aunt aren't twins

[@girlofanimation]

​@@AkitaMix if their dad is the same, they're half siblings. If their moms also happen to be twins, then they're genetically full-siblings.

[@Dawoudkhalifa]

That is Haram.

[@champcpr]

What in the Alabama is going on 😅

[@sunkara8158]

Neither set of the parents are related so it’s perfectly fine.

[@jeanninegorden8142]

​@sunkara8158 right!

[@DivisonXx]

it’s like dating your sibling in law, it might be a tiny bit awkward, but there’s nothing morally wrong with it

[@geraldkor8307]

I don’t understand this.

[@H20x3]

Their moms are genetically identical and their dads are genetically identical. Each child will have 50% DNA from Mum and Dad (which is the same DNA as their aunt and uncle). Therefore, genetically they are siblings whilst also being cousins.

[@snowdaniels]

Wait you married your sister in law

[@walkingwith_dinosaurs]

So what? They are not genetically related

[@lailaalanna315]

​@walkingwith_dinosaurs they actually didn't marry their sister in law. They married the sister in law's sister 😊

[@user-cv8oi8pm3p]

G🙌🌏😇🇺🇸

[@greatman5836]

😠