________ and ________ are the two birth defects that occur when the neural tube fails to close 27 days after conception.
A) Down syndrome; Tay-Sachs disease
B) Trisomy 13; trisomy 18
C) Spina bifida; anencephaly
D) ADHD; autism

Question

Quizplus · Accepted Answer

Spina bifida and anencephaly are both neural tube defects that occur when the neural tube fails to close properly, typically around 27 days after conception. Down syndrome and Tay-Sachs disease are genetic disorders caused by an extra chromosome or a specific gene mutation, respectively. Trisomy 13 and trisomy 18 are also genetic disorders caused by the presence of an extra chromosome. ADHD and autism are neurodevelopmental disorders not related to neural tube closure.

________ and ________ Are the Two Birth Defects That Occur

and Are the Two Birth Defects That Occur