When will the Attorney General argue that defendant forfeited his claim by failing to lodge a timely objection to an expert's testimony?

Initially, the Attorney General argues that defendant forfeited his claim by failing to lodge a timely objection below. We agree. (People v. Gutierrez (2002) 28 Cal.4th 1083, 1140 [claim that impermissible expert opinion was admitted was not preserved on appeal where no objection was lodged at trial].) As defendant alternatively has argued that his counsel was ineffective for failing to object to the expert's testimony, we will address his contention on the merits to forestall a possible habeas corpus petition based on counsel's performance.