Youngest son puts his in. 50% me, 50%H. Perfect.
Middle son puts his in 49.9% me, 47.5%H. Uh, ok… I guess we always knew there was “something” different about him giving him the extra boost in his ability to do so many things beyond either of us… is this due to alien abduction or something? 
(Technically it’s probably due to not being able to read all his DNA, but that’s not nearly as fun to contemplate.)
Were the remaining genes contributed by the radioactive spider that bit him?
Think I already know which kid got whose DNA and percentage without any testing…
^^^ LOL - I tell mine that they got the “good” 50% from me and the “bad” 50% from their father.
They want tooth enamel from me and eyesight from their dad. That isn’t teally how it sorted… but they did get his good looks. 
It could be worse, LOL! My son got his moodiness from my mother!
http://www.dailymail.co.uk/news/article-5840127/Two-72-year-old-women-discover-switched-birth.html
I tell DS that he got his obsessive from one grandmother and the compulsive from the other. But we both know the brains came from my side :)) .
Sadly, one of our kids seems to have got the best half of both of us and another the worst half of both of us. The “worst” one is bright, fun, and affectionate, but raising her feels like being pecked to death by a chicken. The “good” one does everything she should, which makes life easier, but I wouldn’t mind a hug or kiss once in a while.
My daughter always claimed to be part Viking because she’s blond and blue eyed unlike either of us, and has the spirit of an explorer. She did a DNA test and lo and behold, there is significant Scandinavian genetic make up. Now to determine which of us she got that from, as neither of us know of any non-European ancestry. But her dad does have a medical condition that is usually found only in people of Scandinavian descent.
We had a really weird circumstance in our family. My H’s first cousin is much older than all the other cousins. He never got along with his dad (brother of my H’s mom) and he said it was partly because he was adopted as a child and not treated like a biological son. None of the cousins questioned this because they weren’t born when he was adopted.
His daughter (without him knowing) took a DNA test and popped up on my H’s account as a close relative. Surprise. Turns out he wasn’t adopted at all. If the relationship was through the mom, you could think there was a mystery biological,father. In this case, the DNA proved the dad was in fact the dad.
In most families, the surprise is finding out someone is adopted. In our family it was finding out someone wasn’t!
@KKmama the Vikings were European- unless I’m misunderstanding your post.
@hayden we had one of those in my dad’s family. His cousin was “adopted” but strangely looked like he could be related (my dad’s family has very strong genes apparently). When he was an adult, he told his parents that he was going to find his birth mother. He was heavily discouraged from doing so. Turns out, his adopted dad was his bio dad and he was the result of an affair with the laundry mat woman. Whoops.
My sister has more Ashkenazi Jew genes in her than my dad does- but her mom has absolutely none that we know of (she hasn’t been tested but it would be a huge shock).
My own line pretty much confirmed all of our family lore - purebred British from my mom’s side and “purebred” Prussian “mutt” (many countries - general Prussian area) from my dad’s with that seeming to be perhaps a gypsy line or at least a migratory “unusual” type for the area if I’m reading it correctly.
In other words, I’m pretty much one of Lady and The Tramp’s pups.
H’s line was almost what he expected, but somewhere back in the 1800s someone played around. 
My younger son’s ancestry.com test came out 33% Scandinavian. He is very tall, very blonde , and blue eyed, with a beard. He looks like a Viking and he was mistaken for a native when we were in Iceland last year! 
We had a family rumor that a traveling salesman from Scandinavia married into my Russian Jewish (from what is now Belarus) family. sometime in the mid-19th century I did my testing and I am 96% Ashkenazi Jew and 4% Scandinavian, which is about what 50% would subdivide down into over the generations that have passed…
Remember Willoughby? “Half an Airedale and half a Retriever, and the worst half of both”?
My sister did it and it was completely boring and predictable. We were kind of hoping something interesting would have popped up. She also did the health piece of it, has anyone ever done that?
@eyemamom We did both. Health-wise we learned we are essentially good breeding stock - as long as there’s no value in actual good looks. No health issues showed up (so far).
H was particularly happy to see that considering his mom has severe Alzheimers. She was adopted as a young child, so no one knows her medical history. Fortunately, he does NOT carry the gene for the genetic type.
Due to his mom’s adoption he was curious to see his ancestry, but other than the one person who played around in the 1800s, no surprises. His mom is from a similar background as his dad.
We did the health thing before I got sick. My mom’s family is pretty unknown so I wanted to see if anything popped up. I have no markers for anything. Mr R OTOH is full of recessive traits.
FWIW, I’ve had extensive genetic testing done since then through my maternal and fetal medicine doctor. The results were the same as 23andme’s health report.
as the author of one article told 23andme
A friend of a friend had a similar surprise; turns out her sister and her don’t share the same father although they had been raised to believe they had the same mom and dad; her mom said she thought she’d take the secret to the grave.
So if you take such a test be aware there may be surprises. And the way DNA works it doesn’t have to be you taking this test for an unexpected result to arise, it could be a sibling or a cousin.