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16 October 2020 | Story Leonie Bolleurs | Photo Supplied
Kyla Dooley, runner-up in this year’s Three-minute thesis competition, wants to pursue a career working alongside police enforcement, using her knowledge of forensics to solve criminal cases and convict perpetrators.

When rapes and sexual assaults are committed, DNA evidence can play a large role in convicting the offenders. DNA evidence collected from sexual crimes can, according to Kyla Dooley, often be tricky to analyse.

Kyla has just completed her master’s degree, specialising in Forensic Genetics, at the University of the Free State (UFS). She not only thrives in this field – graduating at the top of the Faculty of Natural and Agricultural Sciences in 2018 when she was awarded the Dean’s Medal – but her work also brought her the runner-up position in this year’s Three-minute thesis competition. 

She talked about her research on the use of male-specific DNA in the analysis of DNA evidence collected after crimes of a sexual nature have been committed.

Explaining her research, Kyla elaborates: “In most cases, the victim is female, while the offender is male. Therefore, the evidence is often a mixture of male and female DNA and this can make it difficult to analyse the male DNA and match it to a male suspect.”

She believes the solution to this is to target male-specific DNA in analysis. “This eliminates all female DNA and simplifies the process,” says Kyla.

“Unfortunately, male-specific DNA technology is not currently used in South Africa, because the DNA regions tested to date haven’t shown much success in distinguishing between males in our population,” Kyla points out.

“The goal is now to use DNA evidence, to match it to a suspect, and have the confidence that it came from him and only him. Or else defence lawyers could argue that it came from someone else in the population,” she says.

Improving DNA evidence

Therefore, Kyla’s research focused on evaluating a new group of male-specific DNA regions, which are to be tested yet, to see if it would be a viable option for use in South Africa. 

“I achieved this by collecting DNA samples from men on campus, processing them to obtain DNA profiles, and then determining how well these regions can distinguish between the men. The results of my research demonstrate the potential of these DNA regions to improve the use of DNA evidence when investigating sexual assaults in South Africa,” says Kyla.

She believes her study can play a role in increasing the conviction rate of sexual offenders, which could lead to a reduction in South Africa’s alarmingly high rape statistic. 

“Everyone in South Africa is affected by this horrific crime in some way or another, so the benefits of this would be widespread,” she says.

Solving crimes

Although Kyla will one day pursue further studies, she is ready for the next stage in her life. “I am in the process of applying for jobs and getting ready to dive into the real world. I’ll definitely be pursuing a career working alongside police enforcement to solve criminal cases and convict perpetrators of such crimes. Working for the NYPD in the USA or Scotland Yard in the UK is the ultimate dream job,” she says.

“I chose my field not only because the forensics world absolutely fascinates me, but also because I want to make a difference. I want to play a role in getting justice for those affected by violent crimes. One simple process in a forensic scientist’s everyday routine could be a life changer for a victim of crime,” believes Kyla.

 

 


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Van Niekerk shines in Ostrava and breaks 300 m world record
2017-06-29

Description: Van Niekerk shines in Ostrava  Tags: Van Niekerk shines in Ostrava

Wayde van Niekerk is in great form leading up to the
World Championships in London in August.
Photo: Khothatso Mokone

Usain Bolt believes Wayde van Niekerk could well be his successor. Bolt, who has won eight Olympic and 11 world gold medals in his career, doesn’t doubt that the Kovsie athlete could take over the reins as an athletic superstar.

This after Van Niekerk broke another world record by Michael Johnson – 30.85 seconds in the 300 m which Johnson set in Pretoria in 2000 – at the IAAF Golden Spike meeting in Ostrava, Czech Republic, on 28 June 2017. He took the honours in the 300 m in a time of 30.81 seconds. In 2016, Van Niekerk also improved on Johnson’s 400 m world record (43.18 s) with a time of 43.03 s at the Rio Olympics.

Unique honour over four distances
Because the 300 m event is not run very often, the record will be regarded as the world’s best by the IAAF. According to the IAAF, the 24-year-old Van Niekerk is now also the first man to run a sub-10 for the 100 m, sub-20 for 200 m, sub-31 for 300 m, and sub-44 for 400 m.

The legendary Bolt, who is in his final season, admitted that Van Niekerk could take over from him. “I think he really wants to be a sprinter, because he's set a personal best in the 100 m this year,” he said to AFP.

“He's shown that he's ready for the challenge. He's really down to earth, he's really humble, he's a great person. He listens and wants to be good, and if he continues like this he'll take over track and field."

Great run prior to Czech Republic
The 300 m world record follows after Van Niekerk also ran a personal best time of 9.94 in the 100 m in Velenje, Slovenia, on 20 June 2017. The 400 m world record-holder also became the South African record-holder in the 200 m again when ran a 19.84 in the 200 m at the Racers Grand Prix in Kingston, Jamaica, on 11 June 2017.

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