Got a child. Little under a year old.
We go to a little baby group nearby. We visit it from time to time. Just like 6 different babies there.

One baby has brown eyes. Mommy and daddy have blue eyes. Oh...

Next baby is blonde. Mommy is blonde. Daddy is blonde. Someone commented, that blonde was very likely with mommy and daddy. She said, no, her mother-in-law is black haired. She proves it by saying, her oldest son has black hair.... Oh....

Out of 6 parents pairs, we had 2 cheating. 1/3. And for the other 4, well, we only ever met the mother and they have not told us anything about their husbands.

This leads me to only one conclusion: People are terrible in high school level genetics. I know, it is not 100% correct, there are special cases and exceptions. But it it 99% correct.

To quote Rex Harrison: "This is what the British population calls an elementary education."

Thats wild haha

If you had blue eyes, and your wife too, and the kid would have green eyes. Would you be 100% sure she cheated if your wife says she didn't? There's ofcourse a big chance that they just accepted their lie to eachother and just live with it.

High school level genetics?
I have no idea what the chances are to get different eye color, hair color, or even skin color. It‘s freaking biology. It feels like you need to be an expert to know all of that stuff.

Dark eyes and hair are dominant traits, that's bio 101, it's entirely possible for them to skip generations.

Or, rather, thats high school bio.

@spongessuck
I must have skipped that part when it was taught in school.
It’s also possible that I‘m becoming old and senile :)

a lot of gene expressions, like what physically happens, are a combination of multiple genes

also my grandparents knew that genes would skip generations often. I have a bunch of traits my grandparents did but my mom never did. I guess you could say she got the dominant traits and I the recessive from both parents

but um... lots of people don't have consistent hair color. like head hair, eyebrow hair, beard hair, body hair. people can have wildly different colors all showing up in one individual

it's possible high school gene math was just giving simplistic examples for the sake of the exercise

> The gene primarily responsible for blue eyes is called OCA2. However, it’s not just a single gene that determines eye color; rather, it involves a combination of multiple genes. OCA2 plays a significant role in melanin production, which affects eye color, but other genes like HERC2 also influence the regulation of OCA2, contributing to the variety of eye colors we see

AI is vague tho

I don't think gene expression is that cut and dry. lol

Both my parents have brown hair. I was born blonde and it changed to dark brown. I know my mom didn't cheat because dad has giant horse cock. Mom has green eyes and dad has brown eyes. My eyes started out brown and are slowly changing to green. My brother had green/blue eyes and this spot of brown appeared in his eye. My mom's family had a bunch of red heads. My dads family had mostly brown hair. Dad is pretty much 100% irish. My mom is half irish and half german. So the expressions I see in my family are interesting. My wife has dark red hair and I have dark brown hair. I have one red head kid and one blonde kid. With the rest either brown or dark brown.

My wife didn't cheat because I got regular donkey cock. Didn't get my dads giant horse cock sadly.

@Demolishun

@jestdotty

You two are cute. Yea, as I said, it is 99% accurate. There are exceptions. Those are rare. Highschool genetics are not wrong, they are only mostly correct.

Dark hair or eyes are dominant. Meaning you can hide a recessive blonde gene in them without expressing it. It doesn't work the other way around. Gingers are just blondes with an MCR1 defect. So, your kids are fine.

Are my observations absolutely certain? No. Beyond any reasonable doubt. Yea.

Oh, by the way. Genes are terribly hard to define. Different papers use different definition. They aren't as try cut as base pairs or alleles. Richard Dawkins usually preferred information unit, while many others use information unit with locality. Sometimes I have even seen allele = gene definitions.