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How cutting-edge DNA technology is used to develop composite sketches

January 20, 2019 / 02:29

This episode discusses the science of predicting physical characteristics like eye color, hair color, and aging in criminal investigations. The guest explains how these predictions help law enforcement solve cases by providing objective descriptions of suspects.

The guest describes the process of aging a person's appearance based on genetic information, including changes in weight and facial features. They emphasize the importance of understanding how people change over time, such as gaining weight or developing wrinkles.

Additionally, the guest talks about how hair color predictions are made using DNA information, noting that while people may gray with age, certain traits like baldness can be predicted as well. They clarify that the images created are not exact photographs but rather representations based on the most likely characteristics.

This method aids detectives in narrowing down suspects and eliminating those who do not match the predicted descriptions. The guest highlights the collaborative nature of this work with law enforcement.

TLDR

The episode covers predicting physical traits for criminal investigations, focusing on aging and genetic characteristics.

Episode

2:29
00:00:00
what characteristics can you identify and predict eye color is the easiest because it's almost 100% genetic and
00:00:08
then probably hair color skin color and freckling and then face shape you have helped close cases you have helped find
00:00:17
killers absolutely we have helped solve quite a number of cases so you really can change
00:00:22
the way these investigations are conducted right and that's why why detectives are coming to us because they
00:00:29
need this information we're able to give them an objective description of the person that they're looking for and
00:00:35
especially allow them to eliminate people who really don't match that description
00:00:46
if this is what you think the guy looked like it at age 25 how do you know what he looks like today generally as we age
00:00:55
you know we're gaining a little bit of weight you know we can look for some cases to see if there's any signature
00:01:01
for balding can you take me through your your thought process and your process in
00:01:06
aging this guy it's the first thing I do if it's nature aggression is kind of wide in the face a little bit to
00:01:12
indicate that he's gained some weight and I kind of want to add some bags under his eyes some gels this is a sort
00:01:19
of instant aging how do you decide what the hair style and the hair color will be and so with the hair color we know
00:01:28
what the DNA prediction was for and you know we we know that you know people generally tend to tend to get gray hair
00:01:35
over time but you know for instance that he's not going to be bald because the DNA is told you he's not going to be
00:01:40
bald I think we had a little bit of a the indication he might be and nothing real strong strong so I gave him a
00:01:49
little bit of a receding hairline and that's what you believe he looks like today or it could look like today yeah
00:01:56
this is really we look at as a possibility that you know add a little bit of age some wrinkles some weight so
00:02:03
there's a little there's an art to this if you will yeah and there's there's wiggle room and we explained to the
00:02:09
detectives that it's it should be looked at very similar to a hand drawn composite sketch that that we're not
00:02:14
giving them a photograph of their person the images come to capsulate those most
00:02:20
likely predictions for this person and it's meant to kind of give you a feel of what the person may look like

Episode Highlights

  • The Power of Genetic Predictions
    Genetic predictions can significantly change how investigations are conducted, helping to solve cases.
    “You really can change the way these investigations are conducted.”
    @ 00m 19s
    January 20, 2019
  • Aging a Suspect's Image
    The process of aging a suspect's image involves art and science, predicting physical changes over time.
    “It's an art to this, if you will.”
    @ 02m 05s
    January 20, 2019

Episode Quotes

  • You really can change the way these investigations are conducted.
    How cutting-edge DNA technology is used to develop composite sketches
  • It's an art to this, if you will.
    How cutting-edge DNA technology is used to develop composite sketches
  • We're not giving them a photograph of their person.
    How cutting-edge DNA technology is used to develop composite sketches

Key Moments

  • Genetic Insights00:02
  • Solving Cases00:17
  • Aging Process01:04
  • Art of Prediction02:05

Words per Minute Over Time

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