As a general rule, if you have to post a message asking if a particular course is a science course, it probably is not. Science courses are pretty clear when you sign up for them, attend them, etc. In most colleges, if a course is (for example) ANT 323, it is an ANTHROPOLOGY course. Even though you cover topics relating to English, History, and Biology. It certainly wouldn't make the course anymore a History course than it would a Biology course.
Further, BIO 421 - Human Genetics would not count as a Social Anthropology course even if you discussed how genetics influenced social displacement of humans.