The fourth week after conception, growth is rapid. the neural tube along a baby's back is closing and the baby's heart is pumping blood. if this neural tube does not close properly, a condition called may result. a) fragile x b) spina bifida c) cleft palate d) down's syndrome

THe correct answer is B. Spina bifida.

Explanation

Neural tube or NTD defects are birth defects of the brain and spinal cord. These defects change the shape or function of one or more parts of the body. Also, they can cause problems in general health, and the development or functioning of the body. These defects occur in about 3,000 pregnancies per year in the United States. One of the most common NTDs is spina bifida in which the tiny bones of the spine do not close completely, and a part of the spinal cord sold by the spine. Children with spina bifida lose mobility of the legs and problems with bladder and bowel control that make it difficult for them to go to the bathroom to meet their physiological needs. So, the correct answer is B. Spina bifida.

b.have there own function.

where is the scientific experiment?