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Scientists have traced human tail loss to a short sequence of genetic code

cnn.com

171–180 of 247 posts

Re: Scientists have traced human tail loss to a short sequence of genetic code

#171
post #146

I’d really enjoy a prehensile tail, despite the adaptations required for trousers and chairs. Also, I was enough a nerd growing up that other kids would have pulled it.

i suspect there would be adaptations to a variety of other things like sleep, bipedal locomotion, defecation, etc.

> i suspect there would be adaptations to a variety of other things like sleep, bipedal locomotion, defecation, etc.

Sleep is easy: sleep on your side.

The rest sound like non-issues to me.

Re: Scientists have traced human tail loss to a short sequence of genetic code

#173
post #101

time to bring it back then, alongside horn implants, and third tit.

Third nipples are quite common believe it or not. Most people with them believe they’re moles.

Yup, I've seen a few. There's even a line on each side of the body that they tend to emerge along, arcing from the armpit down to the crotch.

Re: Scientists have traced human tail loss to a short sequence of genetic code

#174

If we're doing germline edits, the obvious thing to fix first is vitamin synthesis. There are a bunch of useful things other living things synthesise from first principles, and we don't so we need to eat something that has already synthesised the thing we wanted, and we can't cook or preserve it in any way that destroys the material we needed or it won't work. That's what scurvy is, a tree or a lizard just makes its…

The main issue is that evolutionary pressures have optimized for and against certain things that have fragile interplay of consequences with other genes.

While it will become possible to restore auto-synthesis functionality, there are unknown risks associated with germ line edits reengineering Vit C or essential AA synthesis.

It's currently illegal to do so in 70 countries. Specific, very positive beneficial edits that protect against infections, malnutrition, or pathological diseases should be allowed.

Re: Scientists have traced human tail loss to a short sequence of genetic code

#175
post #170

Earlier quoted context omitted.

Rarely is human genetics this simple. For ages geneticists thought large swaths of the human genome were "junk" and over time more and more of it has been proven to have a purpose or function, it just wasn't readily apparent for various reasons. Think of the human genome as sort of the ultimate dependency hell...

Nature does not refactor. There's the laryngeal nerve somewhere in the neck of mammals that has to go around a blood vessel. On Giraffes, this runs all the way down the neck, around said blood vessel, than back up, all that just to connect two places in the upper neck that are inches apart. Evolution writes the ultimate spaghetti code. More info: https://berto-meister.blogspot.com/2011/08/unintelligent-des...

God must be a frontend developer.

Re: Scientists have traced human tail loss to a short sequence of genetic code

#176
post #172

Earlier quoted context omitted.

But imagine if your tail was hairless :/

Imagine if it was covered in pubes. That would definitely be worse.

I'm not sure that would be as much of a problem as one might think, considering that many if not a majority of males today do just fine with their faces covered in pubes.

Re: Scientists have traced human tail loss to a short sequence of genetic code

#178

Earlier quoted context omitted.

wings

Wings are so fascinating. Flying animals have their whole body, from their brain, digestive system, down to their bones internal structure and function [0] optimized for flight. That's where we see species giving up flight ability to get a stronger body, and I wonder what it would take for us to do the reverse to be able to use these wings in any way. [0] https://www.montananaturalist.org/blog-post/avian-adaptation..…

We'd definitely have to give up long gestation and with that, live birth, and probably a good amount of cranial capacity due to weight and energy budget tradeoffs.

Re: Scientists have traced human tail loss to a short sequence of genetic code

#179
I have always lamented the loss of the tail. Every time my dog, though almost entirely asleep, wags its tail to acknowledge my presence, I always say to myself "Now, THAT is efficiency."

I'm not a furry, but I'm open to the possibility of getting that back!

Re: Scientists have traced human tail loss to a short sequence of genetic code

#180

Earlier quoted context omitted.

i suspect there would be adaptations to a variety of other things like sleep, bipedal locomotion, defecation, etc.

I suspect our tailed ancestors slept, locomoted, and defecated.

I think we'd definitely have to rethink our toilets, though. Don't want your tail hanging in there while you're doing your business.
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