Which of the following statements about spina bifida is true?
A) Spina bifida (SB) is not influenced by the environment.
B) Spina bifida does not show any family clustering.
C) A gene associated with the neural tube defects has been identified in mice but no such gene exists in humans.
D) The human X chromosome contains the gene associated with neural tube defects.
E) A couple that has a child with spina bifida has an increased risk of having another child with spina bifida.

Question

Quizplus · Accepted Answer

A couple that has had a child with spina bifida has an increased risk of having another child with the condition. The correct answer cannot be A, B, C, or D since all of them are false statements.

Which of the Following Statements About Spina Bifida Is True