The Black Death’s 14th-century survivors had genetic traits now linked to autoimmune diseases like Crohn’s. This demonstrates how past pandemics influenced the evolution of human immunity genes, highlighting the complex interplay between pathogens and human genetic adaptation.
The average Mexican is genetically…
The average Mexican is genetically 50% indigenous with evidence of native ancestry being significantly higher on the X chromosome.
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Most Korean people don’t have…
Most Korean people don’t have armpit odor. Only 0.006% of the Korean population have the ABCC11 gene, which is the cause of armpit odor. As a result deodorants are rarely sold in Korea.
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In Europe, Italians have the highest…
In Europe, Italians have the highest genetic diversity. They have extraordinary peculiarities that contribute to reducing the risk of kidney inflammation and skin cancers, and the risk of diabetes and obesity, favoring a longer lifespan.
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Humans are 99.9% genetically identical…
Humans are 99.9% genetically identical to each other. The 0.1% difference account for the various differences, like skin color, hair color, eyes, and even diseases.
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Scientists Have Finally Figured out Why Some Squirrels Have Black Fur
If you live in certain regions of the U.S. or the U.K., you may have spotted squirrels that are black instead of gray. These unusual animals have been a bit of a mystery, but now scientists have figured out why they have such an odd color.
Researchers at Anglia Ruskin University, Cambridge University and the Virginia Museum of Natural History worked together on a project to test squirrel DNA. They discovered that black squirrels are the product of interspecies breeding between the common gray squirrel and the fox squirrel.
Fox squirrels are usually reddish-brown, but some of them carry a faulty pigment gene that turns their fur a darker shade. Scientists believe that a black fox squirrel joined in on a mating fenzy among gray squirrels and mated with a female, who then gave birth to a black squirrel.
There may be an evolutionary benefit to black fur that caused the gene to be passed down. Black fur could help squirrels absorb and retain more heat — an important benefit in colder regions.
Black squirrels remain rare, however. There is an estimated one black squirrel in every 10,000 squirrels.
In certain limited regions, though, the black squirrels have become predominant. At Kent State University in Ohio, for example, 10 black squirrels were released by students after they were captured by wildlife authorities, and they now populate the entire campus.
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15 People Who Definitely Lost the Genetic Lottery
Genetics are a tricky thing. You could live your best life, eat healthy, exercise, avoid drinking and smoking and still end up with some horrible disease.
It’s tragic, but true.
In this AskReddit article, people share how they believe genetics cheated them.
1. Bad knees
“Knees. They just don’t work properly, even after the operations to keep them from dislocating. They always hurt.”
2. Squinting
“My ‘Beautiful’ light green eyes are so bad at denying light that I constantly squint, which leads to headaches.”
3. Damn him!
“Unibrow. My younger brother has thin half-eyebrows. Me (F) has one long, thick and bushy brow that goes from one hairline clear across to the other.
That rat bastard brother is also nearly completely hairless on his arms and legs. And blond.
That f*cker.”
4. Ugh
“My fathers family has early onset dementia, my mother’s family all live to be 100.
So I’m destined to lose my mind at 50, and spend the next half century wondering were I left it.”
5. No fun
“I’m Arab on my mum’s side and Italian on my dad’s.Basically I have to spend a lot of money on hair removal.
I’m a woman, for everyone asking.”
6. That sucks
“Severe acne.
Looking back over old family photos, it seems to be a common feature. At least it’ll clear up at some point.”
7. Rough
“Psoriasis all over my torso/legs/scalp.
It’s kinda weird to bring it up on a first date as well, so I got ghosted an awful lot before finally getting it under control.”
8. Bummer
“My orthodontist legit said I had a monkey face and that my jaw kinda went outwards and she said the surgery wouldnt be so costly, only for my dad to say we couldn’t afford it. Hits hard sometimes.”
9. Take care of yourself
“Both my grandfathers dropped dead at age 59.
Both from cerebral hemorrhages.
I have high blood pressure.
I’ll turn 52 this summer.
Tic, toc.”
10. One way…
“I am 6 ft tall and have the wingspan of someone who is 5’4. Basically a human T-rex.”
11. That’s strange
“My great-grandfather had 3 kidneys. I’ve had kidney problems since I was a baby.”
12. That’s not good
“Absolutely shitty teeth. Some people don’t have to wear braces. It was crucial for me to wear them but my parents weren’t educated enough on the matter to make me wear them. So now, at 28 i’ve had more teeth surgeries than i can count, finally have them straight but the price and the pain i had to endure for them is 20 times more than i would have 20 years ago.”
13. And the other…
“I’m 6’2 and have the wingspan of someone who’s 6’6. I look like fucking slender man.”
14. Luck of the draw
“Twin Gets Nothing, I Get:
•Colour Blindness
•3rd-Generation Acne
•HyperMobility
•Muscle Spasms
•Creaking Bones
•4th-Generation Early Arthritis”
15. Bad news
“I’m a woman. I have a hot mom but came out looking like my dad.”
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The same Gene that causes…
The same Gene that causes Asian people to “flush” when drinking alcohol causes a 4 times increase in DNA damage, and a much higher rate of heart and cancer problems from drinking alcohol.
There’s A Reason Some People Stay Skinny Despite Eating Like a Horse
Everybody always has that one friend – you know, the one who can take down a whole pizza and some beer all by themselves, then turn around and ask for dessert… all while maintaining their seemingly impossibly svelte physique. Oh, and they don’t work out either. Nope, they just go around eating whatever they like with no consequences at all. No pounds piling on, no ours of atonement at the gym. Must be nice.
Well, you’ll be interested in the results of this study, which claims to have the answers…though they’re probably not going to make you feel any better.
Basically, your body type depends on the genes you were born with far more than on any diet or exercise routine you employ as an adult.
The new research aimed to pinpoint the genetic architecture of skinniness and severe obesity, and their findings, published in PLOS Genetics, could help explain why some people find staying thin easy while others have the opposite experience.
That is not to say that environmental factors like high-calorie diets or sedentary lifestyles don’t play any role, but obesity, as many people have realized, is more complex than eating too much fast food.
The study leader, Professor Sadaf Farooqi, issued this statement:
“This research shows for the first time that healthy thin people are generally thin because they have a lower burden of genes that increase a person’s chances of being overweight and not because they are morally superior, as some people like to suggest. It’s easy to rush to judgement and criticize people for their weight, but the science shows that things are far more complex. We have far less control over our weight than we might wish to think.”
No one tell the billion-dollar diet industry that they’re bunk.
Or wait. Maybe we should.
This study included the DNA of around 14,000 people – 1622 thin people, 1985 obese people, and 10433 people with average body mass, and identified the genes linked to slimmer people. Adds researcher Dr. Ines Barroso,
“As anticipated, we found that obese people had a higher genetic risk score than normal weight people, which contributes to their risk of being overweight. The genetic dice are loaded against them.”
The research supports previous studies, which have suggested that though a number of variables dictate weight gain (or loss), your natural metabolism has a lot to do with how you look.
With obesity posing a huge health risk, particularly in Western countries like the US and the UK, these researchers hope their findings will help doctors and laypeople alike gain a more attenuated understanding of what causes it – and how we can adjust our weight-loss strategies accordingly.
The study might also lead to different approaches in the future, as our science continues to advance. Professor Farooqi suggests,
“If we can find the genes that prevent them from putting on weight, we may be able to target those genes to find new weight loss strategies and help people who do not have this advantage.”
Which is to say, you might be able to find a diet and exercise routine that compliment your genetic makeup, therefore not applying unrealistic standards and goals in each specific case.
We can dream, anyway.
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All humanity has a common (8000x) grandmother…
All humanity has a common (8000x) grandmother. An African woman who lived 200,000 years ago is the common maternal ancestor of all humans alive today. 00