PROVO, Utah (AP) — Lawyers for the man accused of killing conservative activist Charlie Kirk are expected to keep questioning the reliability of DNA testing that prosecutors say links the defendant to the suspected murder weapon. A member of Tyler Robinson’s defense team closely interrogated a DNA analyst from the FBI on Tuesday about the techniques she used to tie Robinson to a rifle found at Utah Valley University. Kirk was shot on the campus in September. Defense lawyer Michael Burt cast doubt on the FBI analyst’s conclusions. But legal experts say prosecutors have a low bar to demonstrate they have enough evidence for the case to proceed to trial.