How Far Scientists Go To Create Your Face From Your DNA | Science Skills
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- čas přidán 1. 11. 2021
- Population geneticist Mark Shriver and his team at Penn State want to make replicas of faces using solely DNA. This kind of technology, once honed, could be essential for solving cold cases involving unidentified remains. Facial reconstructions are often a last-ditch effort to identify victims when other leads don't pan out, but traditional forensic sculptures are only approximations. Here's how Shriver Lab is trying to get us as close as we can to a copy machine.
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How Far Scientists Go To Create Your Face From Your DNA | Science Skills - Věda a technologie
As a biotechnologist, I'd like to add a few things to this approach. Actually, a huge limitation of Genomics (study of genes) is that it doesn't account for the changes at the transcript (RNA)or proteomics (proteins) level.
For example, if a person ends up having a burnt mark on the face or some physical abrasion done to the skin cheek bones, the DNA level studies will not be able to account for that as DNA cannot inform you for something it isn't involved in. That's why we have Omics study now. Could be the case that they showed SNP's to make the general audience understand what they do.
Nevertheless, as they mentioned this technology is still in it's infancy, interesting approach however.
What sufficient sample would have to be to determine the influence of hormones on facial development?
Per say a female suspect whose DNA profile suggests more feminine look and actual high testosterone level resulted in more masculine appearance.
What sucks about this is that some people look similar. I've seen people I could swear that are related, but aren't. I wonder if we starting using this in the future if mistakes will be made where we point the finger at the wrong person. I'm not saying we shouldn't use this. It is amazing, but sadly nothing is perfect.
But then again, DNA.
The value, and likely use case, for this technology is more about finding initial leads and excluding people than positively identifying them. Sure, there is a chance some innocent people might be suspected where they otherwise wouldn't be, which is a bad thing even if they are likely exonerated by other evidence, but on the other hand, there is statistically speaking a _greater_ chance that innocent people who might be suspected would be excluded.
Put another way, if they have a DNA 'face' and five innocent potential suspects, it's more likely that none of them will match the DNA face than that one of them, by a fluke, will. Of course, it can't be used alone to convict, but still a net positive in my book.
Maybe they are somewhat closely related.
@@NoName-de1fn u dont have to be related to look really similar, but still they have the DNA so they cant accuse a innocent
@@JO-bo4yx But if people look really similar doesn't that mean they are closely related even if the ancestral line split many generations ago?
This is absolutely unreal. I'd have never even begun to imagine such a thing would ever be possible. Beyond amazing.
I wonder if epigenetics also plays a role. If you were involved in a famine, does that change the expression of important genes and ultimately phenotype?
Definitely, parental effects and prenatal environment as well
Yes, but it's a separate question whether there are any epigenetic impacts on the relatively small proportion of genes that likely contribute to facial structure. My understanding of the epigenetic impacts of famine are that it mainly effects metabolism, which, unless you are obese or extremally underweight, are unlikely to effect facial features.
I'm very keen to see more research into epigenetics, my main question is about how wide-spread epigenetic impacts actually are - are they influential in a handful of cases, or does epigenetic variation have a pervasive effect throughout the genome? Also, a lot of research at the moment doesn't really distinguish between epigenetic changes during an individual's lifetime or in-utero and inherited epigenetics, which seems like a crucial difference.
@@merrymachiavelli2041 Very cool. You seem more informed than I am, so I will have to defer to you. It seems possible (even very likely) to me (a mere layperson) that things like famine would likely leave major changes in both phenotype and important areas of epigenetics too. I am going off of my knowledge that stress as an infant causes certain important epigenetic changes that are rather dramatic in their expression of behaviour, so major events like famine could perhaps do the same to adults. Thanks for the info, guess I'll have to wait to find out.
There was an epigenetic study that showed grandparents that survived a famine had children and grandchildren that lived longer than the average population.
So happy to be a part of this!!
Me too 😊
I would think it would be helpful to get unrelated individuals that look a lot alike and find the similarities in their DNA.
Imagine your dna shows that you're supposed to look better than now but for some reason, the environment and maybe the foods you ate growing up fucked up your appearance.
this is not really what your DNS says you should look like but just what a computer thinks you look like based off of your DNA and its algorithm that compares your DNA to sample DNA and constructs a face based on the faces provided by the sample DNA
My god..... SCIENCE AT ITS BEST! 😄
i know right , world is finally ending :)
@@mortifer8655 😭
Iss mein koi comedy nahi thi
@@mortifer8655 No, I don't think so, technology just started and it will probably get so much better in the future. As a kid, I’m so excited to see what would happen when I’m a grandma in 2070! (62 by that time think?) Also we, the fact that the human race has been through so much hell and back but still survived also adds up to my opinion
I can't be the only one who never recognizes anyone even from 10 photos. I only recognize a face if i have seen it in person or in a video
@mogad This can be very confusing sometimes LOL
Same here)) And another weird thing is that I need a lot of time in order to remember a face to be able to close my eyes and see it.
It took me almost a year to be able to describe my now ex wife’s face from my memory.
Amazing work. Its really happening , unbelievable science.
I don’t ever see how people often identify victims by portraits. They almost never really look like the real person. But if it helps with cold cases I’m all for it. Just confused
1:02 me when I realise that the exam is in two days
Last year I watched a south indian movie in which this tech was used. The movie was pretty good.
What movie is it? It sounds awesome.
This could be a way to see how someone looks like when you or your child is grown up
its awesome we could go this far.
Watch when they start using this technology to make robots with human faces...
Very interesting. :)
I seen something like this in the wonderful works in the place called wonder werks
I can see this used in artificial insemination...babies by choice of appearance or other traits.
Background music just gives me buzzfeed unsolved flashbacks
I looked at what I'm supposed to look like on 23 and me and according to my DNA. I'm supposed to have straight hair and blue eyes. I have green eyes and curly hair.
Bill Nye the science guy would have fun with this
*My DNA report said i am most likely obese but i am not!*
I doubt that
Not weird at all. Keeping lockets of hair used to be very romantic. Lol.
And this is how clone are made 😂
If the condition was right.
Just think it took days and now just seconds
Can I donate any of myself to this cause? My doctor has all my DNA and such put away!
Ok but like.. the presence or absence of a cleft chin isn't terribly differentiating, this tech is good enough to identify criminals. So why isn't it?
Edit: I get why now. Because it is accurate. The "justice" system is designed intentionally, not accidentally. Features, not flaws.
Neural network task? DNA -> Photos of people. Get hundreds of thousand of samples and train!
they should do this with ape bones.
The face changes with age but this video indirectly states that dna too change with age. So, is it true???
Your DNA does not change. However, the expression of your genes may change over time depending on many factors. Your DNA is a code for proteins and it's proteins in your body which dictate your metabolism, phenotype, hormone levels, etc. Some part of your DNA can be silenced. For instance, women have two X chromosomes but during fetal development one is silenced while one is expressed.
So that would be close to the base line you and any variations were caused by life I guess.
Vocal fry is strong with this one.
In my house green eyes are not so a rare my two sisters were green eyes and my two nieces meaning my little sister was green eyed .
I love Science
Ehkä oudoin torille tähän mennes
👍
Stay weird
Science is a magic and amazing thing 🪄