Anything beyond 41 weeks is considered post-term. In mixed race pregnancy problems, researchers have found that black and Asian women may actually have shorter pregnancies which would make them full-term at 39 weeks. Allowing their pregnancies to progress past 41 weeks might prove dangerous. One of the signs that marks a baby's readiness for birth is meconium in the amniotic fluid. It also suggests that the pregnancies of black and Asian women actually tend to be shorter.
Less fashionable is it to explore race as a biological concept. The HapMap.
My Lady is Pregnant. No, take a really deep breath. Sit down. You look like you could use a drink. No, something stronger?