"How can an African American person, evolve from a white person?"

 Here’s a clip from a BBC documentary “Science Friction” which aired back in 96....Why watching  the clip...I was  truly  loss for words...Not just from the incredible lack  of knowledge of  the students, but the incredible ignorance of the teacher...What kind of science teacher doesn't understand that wolves and dogs are the same species? Also, how about  the hint of subconscious racism? The white kid automatically assumes that black people “evolved” from white people we’re different skin”…implying inferiority....He didn't  say it the other way around....I guess when you have been taught that everyone in the bible is/was white, especially Jesus, despite where they were located...You get this kinda of thinking.
Do people really believe  that black people  and white people  are two different SPECIES, not races? Do people still believe the myth that  “Noah put the animals in the ark two by two, according to their kind,” as a way of arguing against interracial marriage?
What are your thoughts? Should the teacher have taken the time to explain to the young man that Africa is  believe to  be the  cradle of creation?