As a twinmom, people always ask if there are twins in the family. It’s common knowledge, but how do twins run in families?
We’ve all heard twins run in families, but few people really know why, how, or if twins are genetic.
So let’s answer the question, if and why do twins tend to run in families?
The answer depends on a few variables, and the first of those variables is whether the twins are identical or fraternal. While there are some outliers, like semi-identical twins, most twins will fall into two categories: identical or fraternal.
Identical vs. Fraternal Twins
The first thing to tackle is explaining how identical and fraternal twins are formed in the womb because this has a big impact on the genetics of twins.
Identical twins started out as one single egg that split into two.
Fraternal twins were always two separate eggs that were released.
So a woman only needs to release a single egg to have identical twins but would need to release two eggs to have fraternal twins.
This distinction is important and something to keep in mind when talking about whether twins really do run in families.
The simple answer is when it comes to identical twins they are never due to genetic factors. Whether a single egg splits into two, creating twins, has not been shown to be linked to anything genetic.
When twins *might* be genetic
Fraternal twins however might be related to the genetics of the mother only. Whether twins run in the father’s family is immaterial to the question of whether twins are genetic. Why?
The genetic factor that impacts fraternal twins is if the mother tends to hyperovulate.
Hyperovulation, or releasing more than one egg by ovulating multiple times in one cycle, IS known to run in families.
This hyperovulation is what creates the necessary environment for fraternal twins, multiple eggs.
So yes. Twins are genetic… sometimes.
Fraternal twins are sometimes genetic when hyperovulation runs in the mother’s family. But just to reiterate, identical twins are NOT genetic.
Also, the dad’s family history has no impact on whether a couple will have twins. Remember, it’s because of the mom’s hyperovulation that twins might be born due to a family trait in genetics. So, only a mother’s genetics can impact whether she has twins.
There you have it. Know you know whether twins are genetic. The answer to the question, do twins run in families, is solved. And in case you wondered, my twins are identical. So NOT genetic. Just lucky.
You've been breastfeeding your toddler for what feels like foreeeever, and you're ready to wean. But how? In this post, I'll break down some tips for how to wean a toddler from breastfeeding. I've put in a combined roughly 94 months of breastfeeding so far between my...
Getting outside is so important for little ones to get fresh air and run off some energy, not to mention it’s great for mama too! This is our list of the best outdoor toys for 1-year-old that kids and moms both love.
The BEST resource for learning how to totally rock momlife is the wisdom other moms learned in the school of hard knocks. So we are sharing 28 best mom hacks that real moms swear by and shared on our Facebook page. Honestly, some of the tips and incredible mom hacks...
Want more breastfeeding tips? Find us on Facebook, Instagram, or Pinterest.facebookinstagrampinterest Got a stage 5 clinger who won't let go of your boob? Like your nipple feels like it's now permanently attached to your little squish? You've got a cluster feeder....
Think you're pregnant or trying to conceive? You're probably wondering what kind of pregnancy test should I buy? These 5 questions will help you choose which is best for you, and we'll give you our pick for the best one. So you can answer the question for yourself on...
Want to give your breastfed baby a bottle, but worried about them starting to prefer the bottle over breast? Paced feeding is a great way to initiate bottle feeding, and I'll share how and why I chose paced feeding with my breastfed babies. I've breastfed for over 6...
Just found out your pregnant, or maybe wondering if you are? These first month pregnancy tips will help you get started. The first few weeks of pregnancy can be stressful and also blissful. These are three tips to help you get started at the very beginning, and I've...
Another year over, and a new one about to begin. As I write this it is 8:21pm on December 31, 2019. We are about to start a new decade. Like so many others, we are taking a minute to look back first. These are our top 10 viewed posts of 2019 here at Mom Uprising. They...
Tired? Stressed? Ready to let it all go and start putting yourself first? Let's do it, mama. Get started with these 10 self-care inspiration posts we totally love. It's easy to get stuck in a rut, and sometimes just a simple image can break you out of your stickiness...
Expecting twins and want to tandem breastfeed? There are so many questions, right? Like what are the logistics? What is the best way to breastfeed twins? I got you. Keep reading to find out how I made it work. Breastfeeding one baby can be an awkward learning curve,...