Does a court have a duty to instruct a defendant on certain defenses and their relevance to the charged offense?

elements of the charged offense." (People v. Sedeno (1974) 10 Cal.3d 703, 716 (Sedeno), overruled on another ground by People v. Breverman (1998) 19 Cal.4th 142, 175.) However, "[u]nlike the rule obliging the court to instruct on lesser included offenses and to give requested instructions whenever there is 'any evidence deserving of any consideration whatsoever' [citation], the duty to give instructions, sua sponte, on particular defenses and their relevance to the charged offense arises only if it appears that the defendant is relying on such a defense, or if there is substantial evidence supportive of such a defense and the defense is not inconsistent with the defendant's theory of the case." (Sedeno, supra, at p. 716.)