Kly, forgive a naive question, but...

If Zimmerman chooses to testify, could he still invoke his Fifth Amendment privilege in refusing to answer specific questions? I know a defendant can do that in a federal trial (i.e., the Rosenberg spy case, when both defendants chose to testify but invoked the Fifth selectively). Not sure he can do it in a state trial.

If he can take the Fifth selectively, and he chooses to do so, the prosecutor will have a field day with the jury's perception of him ("Did you associate the decedent's wearing of a hoodie with black 'gangstas'?" "I respectfully decline to answer that question on the grounds that my answer might tend to incriminate me"). Imagine Michael Corleone at the Senate hearing: "Were you responsible for ordering the murder of the heads of the Five Families in 1950?" "I respectfully decline to answer that question on the grounds that my answer might tend to incriminate me."