The myth of the 'supermale' and the extra Y chromosome

In the 1960s and 1970s geneticists pursued a fascinating hypothesis: Is it possible that a man could be born with a criminal gene?

Produced & narrated by Estelle Caswell

[subhasishchatterjee]

A curious child is born with extra why chromosome.

[neltharium]

You: XY

The guy she tells you not to worry about:

[crazydave]

"Yo guys, guess what. All of the prisoners we tested with XYY are criminals... sus"

[avocado]

"Tall"
"Severe acne"
"Long arm span"
"Aggressive anti-social behaviour"
Me:👀

[davidkellymitchell]

I'm 6'2" with acne scars and watching videos like this makes me so mad I just want to punch a hole in the wall.

[gblaze]

This video is saying the extra Y chromosome has no effect on behaviour

[SuperGreatSphinx]

XYY syndrome is a genetic condition in which a male has an extra Y chromosome.

Symptoms are usually few.

They may include being taller than average, acne, and an increased risk of learning problems.

The person is generally otherwise normal, including normal fertility.

The condition is generally not inherited from a person's parents but rather occurs as a result of a random event during sperm cell development.

Diagnosis is by a chromosomal analysis.

There are 47 chromosomes, instead of the usual 46, giving a 47, XYY karyotype.

Treatment may include speech therapy or extra help with schoolwork.

Outcomes are generally good.

Prevention is not possible.

The condition occurs in about 1 in 1, 000 male births.

Many people with the condition are unaware that they have it.

The condition was first described in 1961.

[babycartesian]

Id like to see a YY man he would probably be just like vegeta

[daa]

1 in a 1000 men have this, quite common...

[Lycaon]

I'm guessing that the x x chromosomes are why girls have Xx in their usernames?

[rebekahnunes]

I'd literally never heard of this phenomenon until watching this video. but it makes it sound like everyone knows

[sujalakasl]

Papa franku had so much chromosome he transcended this plane of existence and moved to the realm of the omnipotent.

[shiny_x]

Interesting. I definitely remember learning about that XYY were more likely to go to prison in high school biology (in the late 90s), hopefully they have updated the textbooks by now.

[callies]

I know a guy with two y chromosomes. He's really tall and a little weird but not a raging psychopath as far as I know.

[timothysstuffintros]

Wait so xxxtentacion is a superwoman..? Makes sense

[dpyp]

What is YYY chromosome? Chuck Norris? Superiorman?

[Krolted]

My brother has this and yes, he's very aggressive and kinda hyperactive. But still he's a warm person and not anyone with this sydrome is bad or a "criminal". He loves me and my family and he would do anything to protect us. Even if he cannot always control himself, hes trying to change. He's a very strong person with a big heart that's why I love him so much. He got teased a lot in high school, middle school, everywhere just bc he looks older than all the other kids at his school. It's just not fair. I wish he could be happy and proud of himself for what he is. He's such a kind and handsome person and it breaks my heart to see him like this

[misterosc]

most interesting video I've seen in quite some time
THANK YOU

[varunchopra]

I got so thrown out of the video when I heard "he has an extra Y chromosome, the criminal gene"... I mean come on scriptwriters and editors, you literally said the word chromosome where did gene even come up

[starRushi]

Fun fact, there are also two other genetic disorders, a female with just X (Turner Syndrome) and males with XXY (Kinefelter Syndrome). Both lead to to infertility. An interesting thing about Kinefelter is you get a guy who is like 90% male and 10% female