(1)(a) engages in oral intercourse or anal intercourse with the victim or causes the victim to engage in oral intercourse or anal intercourse

(b) the victim is under 12

(c) victim is under 16 & is the subject's sibling, step-sibling, child, step-child

(d) the victim is incapable of consent by reason of mental incapacitation, physical helplessness or incapability of appraising the nature of the victim's conduct.

• 163.325 (ignorance or mistake as a defense) applies