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Study can increase conviction rate of sex offenders

16 October 2020 | Story Leonie Bolleurs | Photo Supplied

Kyla_read more — 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.

News Archive

Autumn Graduation Ceremony a thrilling showcase

2013-04-19

Yolanda du Toit from the Department Student Academic Services is the proud mother of three daughters who all received qualifications at the Autumn Graduation. Maryke (left) received her certificate in Certified Financial Planning. She already has degrees in B.Com. Law and LLB. Amandi (centre) received her B.Ed and twin sister received her degree in consumer science.
Photo: Renè-Jean van der Berg
19 April 2013

Gareth Cliff video clip
Vicus and Vincent Visser video clip
Joshua Johnson video clip
Graduation YouTube video clip

Photo Gallery

The university’s Autumn Graduation Ceremony infused the Bloemfontein Campus with exhilaration last week.

Beaming with pride, graduates received 526 diplomas/certificates and 2 796 bachelor’s and honours degrees in total.

Prof Jonathan Jansen, Vice-Chancellor and Rector, lead each procession of graduates from the Red Square down the path to the Callie Human Centre while the beat of drums filled the air. “To break the cycle of poverty, get an education, get a degree,” Prof Jansen urged graduates during their respective ceremonies. He underscored the fact that, as graduates, they are ten times more likely to get a job, with the odds rising as they continue their postgraduate studies.

Dr Khotso Mohele, Chancellor of the university, advised graduates not to allow life’s obstacles to discourage them. “Take what you have learned over the last three or four years and use that knowledge to reach your goal,” he said. He also emphasised that graduates need to be able to take standpoint against issues.

Graduates’ ceremonies were made even more memorable by various local and international speakers and performers.

American student and tap-dancer, Joshua Johnson, inspired the audience with his story of hope and perseverance. As a student from Penn State University, he travels five hours by bus to New York every weekend where he dances on the subway train to earn money for his tuition fees. Joshua told graduates that, in order to achieve their goals, they have to make the best use of the 24 hours they get to live daily. “Don’t follow in the footsteps of someone else. Take the beat of life, but add your rhythm to it," his wise words resonated with the exhilarated graduates. The audience could not help but clap to the rhythmic beat of his tap-dancing performance.

Vicus Visser, dubbed Bloemfontein’s Justin Bieber was also on the list of performers. Vicus – a South African YouTube singing sensation – performed with his brother, Vincent, to the delight of the crowd.

Radio personality and Idols South Africa judge, Gareth Cliff, was also among the speakers who addressed the graduates during the week. “It’s a good time be alive, a good time to be a South African, a good time to be a qualified South African,” he said. “It’s a time in our country’s development that we require minds such as yours to propel us forward,” was part of his message. Gareth also stressed the freedom of speech in South Africa, especially the freedom of the media.

The Autumn Graduation Ceremony of 2013 was an immense success and filled the hearts of Kovsie graduates, students, staff, parents, family and friends with overwhelming pride.

The Qwaqwa Campus’ graduation ceremony will take place on 8 June 2013. Diplomas / certificates up to and including doctorates will be awarded at this ceremony.

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