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Genetics (lemmy.world)
submitted 1 month ago by [email protected] to c/[email protected]
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[-] [email protected] 74 points 1 month ago

Didn't know Genetics was so insecure they would project their own insecurities onto others.

[-] [email protected] 23 points 1 month ago

You can only do so many paternity tests before you start seeing the world differently.

[-] [email protected] 57 points 1 month ago

Whatever the political motives/lack of logic behind it, these faces look like they are related by blood.

[-] [email protected] 44 points 1 month ago* (last edited 1 month ago)

Same nose, same eye-shape, similar chin, and rapidly rushing towards similar hairlines. If these two aren't related, that's a huge coincidence.

Also, childhood malnutrition is a bitch and will absolutely cause something like this.

[-] [email protected] 19 points 1 month ago* (last edited 1 month ago)

Yup. There are a million causes for stunted growth that aren't inherited. And these two look the same if you overlook the height and age.

[-] [email protected] 5 points 1 month ago

Also sometimes genes pass down and skip a generation or two. I have the same general build and height of my great grandfather (though I'm more robust) but his own sons look closer to my great grandmother.

[-] [email protected] 5 points 1 month ago

Geneticist here. There are a number of factors that go into determining a person's facial features. Genetics, of course, play a huge role. But other things such as ...

[-] [email protected] 51 points 1 month ago
[-] [email protected] 46 points 1 month ago

This is hilarious, but I had a friend when I was really young. He was black and adopted by a white family. He got this joke (or not a joke) all the time and I could see it wear on him

[-] [email protected] 25 points 1 month ago

Not to mention it actually does happen by birth very rarely. Latent genetic traits can pop up generations later.

[-] [email protected] 19 points 1 month ago

I dated someone in high school whose family was all Irish levels of white and their brother looked like he popped straight out of Puerto Rico. He otherwise looked like everyone else in the family, to the point there was no doubt he was a child of both parents. There were a few other people throughout their family with the same deal. When they introduced me to him they said, “This is Collin, he’s not adopted or anything, he just got lucky.”

[-] [email protected] 7 points 1 month ago

Particularly with Irish people it's more common. Theirs a few genetic pathways to the light skin common in more northern European areas. One of them showed up early in human migrations, and is pretty directly connected to production of the darker skin pigments. Adaptation done, no need for further tweaking to get vitamin D synthesis advantage.
These people tend to have irregular patches of darker melanin regions, hair containing only the lighter variety of melanin, and skin that burns easily because the mutation provides less gradient of melanin production, and more of a "yes or no".
As a result, the path for that gene to be deactivated is also shorter and it's more likely for people to have kids who don't get it nor have many of the genes for the other ways for skin to be lighter.

There aren't a huge number of genes that act like switches like that, so it's very startling for people.

[-] [email protected] 2 points 1 month ago

Neat! Thanks for sharing, that’s cool to know!

[-] [email protected] 31 points 1 month ago

Not pictured: the tall Amazonian woman that's his mother.

[-] [email protected] 29 points 1 month ago

Genetics is, in fact, a science, and it allows for offspring to grow to be bigger than their parents.

[-] [email protected] 12 points 1 month ago

Especially if the parent has a condition that stunts their growth.

[-] [email protected] 15 points 1 month ago

For the record, this is almost certainly a genetic defect of the father, some kind of dominant mutation. Nutrition and other environmental factors most likely didn't play any role in a height difference this big.

There are two copies of each gene. Here, one of the copies got mutated in such a way that it caused the stunted growth of the father. Each sperm contains one randomly selected copy of each gene. Therefore half of the father's sperms contained the mutated gene and the other half the normal version. There was 50% chance the son would be normal height and 50% chance he would be small like his father.

I actually know a family like this. Nothing fishy going on there, the mutation is well described and now new kids with the mutation get growth hormones during their growth to reach normal size.

[-] [email protected] 5 points 1 month ago

Nobody tell him...

[-] [email protected] 3 points 1 month ago

First I thought its a behind the scenes pic from The Princess Bride

[-] [email protected] 2 points 1 month ago* (last edited 1 month ago)

The dommy mommy of the short king gratified the wall in the background (and yes, I do mean that she is just that tall, and named Laura).

this post was submitted on 12 May 2025
637 points (96.4% liked)

Funny

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