White supremacy or white supremacism is a racist ideology centered upon the belief, and promotion of the belief, that white people are superior in certain characteristics, traits, and attributes to people of other racial backgrounds and that therefore white people should politically, economically and socially rule non-white people.
Neural tube defects occur when the bones of the spine do not correctly form, leaving the spinal cord and its nerves and coverings to protrude out through the skin (or lie just beneath it). The use of folate vitamins during pregnancy has decreased the incidence of neural tube defects.
Many different types of brain defects are caused by improper closure of this neural tube. One such congenital brain anomaly, anencephaly (literally without brain) results when the topmost portion of the tube fails to close and the brain does not develop.Anencephaly is the most common severe malformation seen in stillborn births. It is about four times more common in females than males.ongenital brain defects may have genetic, infectious, toxic, or traumatic causes. In most cases, no certain cause can be identified. GENETIC CAUSES Some brain defects are caused by trisomy, the inclusion of a third copy of a chromosome normally occurring in pairs.