Spina Bifida is one of the most prevalent of human birth defects.The defect usually involves the spinal cord or the spinal canal opening to the outside of the body.In severe cases,movement of the legs may be limited or entirely absent.At which stage of development is this defect likely to occur?
A)formation of the neural tube
B)formation of the gastrula
C)formation of the notochord
D)formation of the somites
E)formation of the lateral mesoderm

Question

Quizplus · Accepted Answer

Spina bifida is caused by a failure of the neural tube to close properly during embryonic development. This typically occurs within the first 28 days after conception, during the formation of the neural tube.

Spina Bifida Is One of the Most Prevalent of Human