Technical Details
This is the first in a series of technical posts I hope to put together over the coming weeks about the process of creating Stranger Visions. Starting from the lab end I will describe in detail how I create these portraits from DNA.
The first step of course is extracting DNA from a sample, that can be done with a kit readily obtainable from Qiagen, the “DNA Investigator Kit”.
After I extract the DNA* I do a test PCR for a specific alu insertion using a primer (full kit is also available) from Carolina. This gives me an idea of whether I successfully extracted chromosomal DNA or not. If the results look bad on this there is probably no reason to go further with this sample.
Next is looking at maternal ancestry from mitochondrial DNA. A couple different primer/kits are also available from carolina to look at this region amplifying for sequencing and haplotyping.
If all these results look good I continue to look at 3 SNPs associated with particular traits and 1 region on the y chromsome:
rs12913832 – for eye color
SRY gene – present on Y chromosome, I use to indicate gender
rs9939609 – as one of many indicators of obesity
rs4648379 – preliminary research, correlated with the size of the nose
I have been using a free tool on IDT for designing primers to target these regions using PCR. If the result of the reactions looks good in a gel I send them for sequencing.
So those are SNPs I have had success so far analyzing in the lab myself, but there are a whole lot more clues I have on a “master list”, the things I can find out from a 23andme profile for example. In addition to SNPs related to specific traits this includes Y chromosome haplogroup information from males to get an idea of paternal ancestry, as well as Ancestry Informative Markers, specific SNPs that are correlated with population studies giving an overall picture of ancestry beyond the direct maternal and paternal lineage. I am pasting my master list here below (excluding the ancestry info I just mentioned and linked to above as that would increase the list a thousand fold). Also, here is a link to appearance related SNPs on snpedia.
*I have recently discovered that whole genome amplification can also be performed after the extraction step and isn’t as expensive as I previously though – I will likely pursue this in future experiments.
SNP | allele | associated trait | |
rs642742 | AA | west african | |
rs1426654 | AA | light skinned european | |
rs2814778 | CC | malaria resistance | |
rs17646946 | GG | curlier hair in europeans | |
rs11803731 | AA | straighter hair | |
rs12896399 | TT | blue eyes vs green if not brown – prelim research | |
rs1426654 | AA | euro ancestry – light skinned | |
rs12913832 | GG | blue eyes | |
rs1667394 | CC | decreased odds blond hair | |
rs1805007 | TT | higher odds red hair | |
rs17822931 | TT | dry earwax | |
rs1851665 | AA | greater chance of obesity | |
rs6625163 | AA | baldness | |
rs2153271 | TT | more freckling | |
rs7349332 | CT;TT | curlier hair | |
rs6732426 | CC | curlier hair | |
rs3827760 | AG | thinner hair (asian) | |
rs9939609 | AA | higher BMI | |
AT | typical BMI | ||
TT | lower BMI | ||
rs6548238 | CC | typical BMI | |
CT;TT | lower BMI | ||
rs925946 | GT | typical BMI | |
TT | higher BMI | ||
GG | lower BMI | ||
rs7138803 | AG | typical BMI | |
AA | higher BMI | ||
GG | lower BMI | ||
rs13130484 | CT | typical BMI | |
TT | higher BMI | ||
CC | lower BMI | ||
rs4788102 | AG | typical BMI | |
AA | higher BMI | ||
GG | lower BMI | ||
rs10838738 | AG | typical BMI | |
GG | higher BMI | ||
AA | lower BMI | ||
rs10871777 | GG;AG | higher BMI | |
rs6113491 | AA | baldness | |
rs6152 | GG | baldness | |
rs1385699 | TT | baldness | |
rs1393350 | AA | blue eyes rather than green IF non-brown – preliminary research | |
rs1533995 | AA | more pronounced crypts | |
AG | typical | ||
GG | less pronounced crypts | ||
rs3739070 | AA | typical | |
AC,CC | less iris furrows | ||
rs12896399 | GG | more pronounced pigementation rings | |
TT | absent pigmentation rings | ||
CT | slightly higher odds red hair | ||
rs1805009 | CC | red hair | |
TT | increased odds brown hair | ||
CT | typical | ||
CC | less freckling | ||
rs4778138 | GG | less freckling | |
AA | more freckling | ||
rs1805007 | CT;TT | more freckling | |
rs1042602 | AA | absence of freckles | |
rs2733832 | CC | darker skin | |
CT;TT lighter skin | |||
rs1800414 | C | each c -> 1.3 melanin unit lighter skin in east asians | |
rs16891982 | GG | european light skinned | |
preliminary facial research | source | ||
rs4648379 | C/T | edge of nostril -> tip of lower nose | |
rs974448 | C/T | mid eye to top of nose | |
rs17447439 | A/G | distance between eyes | |
rs6555969 | C/T | distance between cheekbone and nose, ALSO distance between eye and top nose | |
rs805722 | C/T | distance between eye and top of nose | |
Eye and Skin color | source | ||
rs12913832 | |||
Rs12203592 | |||
rs16891982 | |||
Rs1545397 | |||
Rs885479 | |||
Rs6119471 | |||
rs1426654 |
Trackbacks
- Extracting Art from Science | Outside The Lines
- No podemos vivir sin tocar el mundo | Desconexión Económica
- DNA at Crime Scene can be used to Create Offender’s Mugshot | GoSouthOnline
- DNA at Crime Scene can be used to Create Offender's Mugshot - Naija247news
Comments are closed.
Do you think that the ‘information’ and ‘information process’ that you are helping develop might be used in a non artistic way?
It wasn’t long after the concept of ‘evolution’ was presented that the idea of ‘eugenics’ caused a great deal of harm.
Just saying that developing a new ‘art’ through technology needs a bit of caution, especially when we can pinpoint exact times and locations.
Though I have to say that what you are doing in the way of a good crime story is quite nice.
Just think,
HDH. Scientific Investigation…
😉
I am hopeful that my work will call attention to the potential future issues so we can confront them early on.
This is super fascinating! Do you take commissions? I would love to see what my DNA portrait looks like.
Laura, feel free to send me an email to discuss. Email address at the bottom of this page:
http://deweyhagborg.com/bio.html
My thoughts exactly!!!!!!!
Hello.
I was on facebook and happened to see a missing girl posting by her mother. I clicked on the link, which lead me to the missing and exploited children’s page. To my horror, the page was full of childrens picture, some current, some from the past, missing by abduction or runaway.
I wondere where these kids are now, if they even are alive.
They seem to go into a vaccum not to be seen again.
Then I thought the possible ways of finding them.
One thing that cam to mind was DNA, either from live individuals or people unknown, possibley even dead.
So I seached google for DNA face and came to your site. Apparently there is a good method of developing a face or facial variations by pure DNA. Does the technique have an age parameter, what age face you display?
If this is the case, a numerical scoring algorithm can be set up, where the missin childrens pictures are scaned and given a set of values, and any and all available known (if the permission of the onwers are given) or unknown DNA samples are analysed, and instead of a physical face, a similar se of values are generated. Then these values are matched with some scoring system.
This would give you a face to DNA match, and help in finding what happened to these kids.
I don’t know if a curren system like this exists, but if it doesn’t what can be do e in getting it developed, in technical aspect.
Anything to help shed any light on a missing child case would be amazing to the parents of these children.
Thanks for your interest Mickayel, feel free to email me to discuss, my address is at the bottom of the page here:
http://deweyhagborg.com/bio.html
Interesting technique! The CNN article states: “Once she obtains the sequencing information, she takes the traits she’s gathered from the individual’s DNA and feeds it into a computer program to generate a 3-D model of a face.”
Can you share what the “computer program” is that generates this 3D model? Is it PrimerQuest or something else?
Fun stuff.
Tina,
I am working on an open source version here:
https://github.com/hdeweyh/strangerVisions
What a great blog! Makes me believe that one can Extract Art from Science! You are doing wonderful things with your strangervisions Heather!