The hearing over whether prosecutors can submit crucial DNA evidence in the case against accused serial killer Rex Heuermann continued today.

Heuermann was back in court for the second time in less than a week.

The Frye hearing, a legal procedure used to determine whether the scientific method used to generate evidence is acceptable, started last Friday.

Last week, prosecutors called genome science professor Dr. Kelly Harris to the stand. She spoke extensively on DNA research.

Today, prosecutors called University of Toronto Assistant Professor of Forensic Science Dr. Nicole Novroski to give testimony on DNA analysis.

The testified that the DNA extraction method was "effective" but the defense wants the DNA evidence tossed because it's never been used in court in New York.

During the expert's testimony, a clip from the movie "Jurassic Park" was played. The clip showed an explainer of how researchers obtained "dino DNA" from a mosquito. The expert said she uses the video, which detailed how DNA works, as an explainer.

Prosecutors say critical DNA evidence links Heuermann to the killings of seven women on Long Island between 1993 and 2011.

Heuermann's defense team is trying to have that evidence dismissed from his trial.

Heuermann, who was arrested in July 2023, previously pleaded not guilty to the killings of all seven victims, including "The Gilgo Four" and three others.

The hearing continues Thursday.