Twinfant Tuesday: Genetics and Twins

Disclaimer: Skip to the bottom of this post if you don’t care about reading yet another twin fact and are only here to look at cute pictures of Samantha and Amelia!

At the park, yesterday, a few of the other moms were asking some of the typical twin questions people usually ask. After asking if the twins were identical, one mom asked if twins ran in my family (yes, they run at lightning speed all over the place!) The assumption behind this question is usually that if I did have twins in the family, that would help explain why I had twins since there must be some kind of genetic factor there.

First, I explained that while twins don’t run in my family, Jake has two sisters with twins, one with one set and another with two sets. However, that doesn’t really have anything to do with our twins since A) Any genetic predisposition to having twins runs on the maternal side and B) Since Samantha and Amelia are identical twins and not fraternal, there actually is no genetic link at all.

Fraternal twins result from two eggs dropping and being fertilized, and scientists believe some women have genetic predispositions to dropping multiple eggs in the first place. Scientists don’t know, however, what factors, if any at all, lead to one fertilized egg splitting and becoming identical twins. So, there’s no genetic factors in play with Samantha and Amelia.

“I never knew that,” exclaimed a few of the moms.

Just educating the world about twins, one fellow park mom at a time!

Pictures from said park, as promised: 

What a goof. 

Holding on for dear life. 

This slide ain’t big enough for the both of us. 

Yee haw!

Not a natural-born equestrian, apparently. 

The dino park had tons of “fossils” and fun dinosaur sculptures on which Samantha and Amelia loved to climb.

And, of course, lick. 

The only downside to this particular park is that it was sprawling with multiple levels, so I spent most of my time chasing one twin or the other around and dragging a screaming twin back to the middle to join her sister so I could keep an eye on them. 
Notice the pack of moms in the right corner. There were about five of them, each with a toddler running around and each with a tiny infant strapped in a Baby Bjorn. They were all gathered in a circle when we arrived, swaying back and forth to soothe their newborns while yelling at their toddlers to stop throwing sand in each other’s eyes. It felt like we were intruding upon some kind of “mom tribe’s” territory when I let the twins loose. 

Navigating park politics is a post for another day.

Lots of love,


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