Please answer all questions and provide details

Quid the defense need to show in order for the judge to allow the witness to testify as an expert in this case? Hypothetical #7 A defendant is on trial for murder. The prosecutor wishes to place an expert on the witness stand to testify about his findings and report based upon a new scientific procedure which can detect skin cells left behind on a suspected murder weapon. Defense counsel objects arguing this expert should not be permitted to testify about these results because this testing is new and has not been considered by the Court in any prior cases. What would the prosecutor need to do in order to have the objected overruled to allow the expert to testify about the results of this new test? Be very specific and detailed. Hint: This is not asking you about the witness and what is needed for them to testify