Showing posts with label "Genetic genealogy". Show all posts
Showing posts with label "Genetic genealogy". Show all posts

Tuesday, March 26, 2019

New DNA Tool

According to Science Daily, a new DNA tool can accurately predict people's height and could potentially assess risk for serious illnesses, such as heart disease and cancer. It first started out with studies being done in Michigan State University, where computers were used to read people's height and bone density. The reading of bone density was not entirely to point, but it showed accurate readings of other things, such as diseases.


The advanced algorithm is able to look at the genetic make up and height of each person. The computer learns from each person and ultimately produces a predictor that can determine how tall they are from their genome alone. The computer system is currently being worked on in order to advance and accurately interpret genetic traits and diseases. 

This new technological advance can help many doctors identify a better way to read and predict illnesses. A genomic test using this algorithm can be as simple as a cheek swab, with efficient cost as low as $50. I believe that this is a better advancement into technology, where doctors are going to have a better hands on exposure to patients health. 



Tuesday, March 19, 2019

The Solving of a Crime from Twenty Years Ago

An article published in the New York Times shares how genetic genealogy helped to solve a two decade old murder case in Alabama. Tracie Hawlett and J.B. Beasley went missing on the way to a birthday party. Their bodies were discovered shot to death in the trunk of Beasley’s car on July 3, 1999. Evidence of sexual assault at the crime scene led detectives to collect DNA. The Ozark Police Department were able to produce a suspect using the newly emerging investigative technique known as genetic genealogy. Genetic genealogy has helped to solve several cold cases including the Golden State Killer case. The new technique is facing both support for expansion and opposition including laws to ban the practice. To utilize the investigative technique, a genetic profile is uploaded to GEDMatch, a genealogy database, and then a team of genetic genealogists look for a close match. Investigators hope for something in the third cousin range when looking for possible matched. In the case in Alabama, the results were much more distant than third cousin, but provided some last names of possible suspects. Detectives were able to make a connection because of the surnames provided by investigators. 
The victims of the crime: J.B. Beasley (left) and Tracie Hawlett (right).
I found this article to be interesting because it details how a new investigative technique is helping to solve cases from decades ago. It is remarkable how technology advancements have helped the criminal justice community solve cold cases. It is possible that without the development of this new technique many cases would go unsolved and that many families would still be looking for answers.