The AAMC posts an application instruction manual every year. I would follow what it says. I would not consider most "behavioral science" classes to be science in the traditional sense. Possible exceptions include statistics, biopsychology, and cognitive science/neuroscience classes which are heavy in neuroanatomy and the biological aspects of those fields. There are some that exist. I would not count clinical psychology, introductory psychology, learning/cognition, social psychology, etc. in that list.