Strictly speaking, there's no such thing as "races"... at least as far as humans are concerned.
So I voted "Other". My ethnicity is German though (for the most part).
Right, which is why blacks are not more prone to get sickle cell anemia.
Actually, carrying the sickle-cell gene doesn't make you "black", it probably makes you someone with ancestry from a malaria-stricken area. Since the sickle-cell gene makes you more resistant against malaria, sickle-cell anemia is most prevelant among people who originate from areas where outbreaks of malaria were once common.
Africans from areas where no maleria outbreaks occured are far less likely to get sickle-cell anemia. On the other hand, outbreaks of maleria did occur in other areas of the world than Sub-Saharan Africa and people from that regions could also carry the sickle-cell gene (Arabs or Indians for instance). Historically, it's just so that malaria is/was most common in Sub-Saharan Africa.