– Anencephaly
– Spina bifida
– Spina bifida – NHS Choices
– Down syndrome – Trisomy 21
– Edwards syndrome – Trisomy 18
– Patau syndrome – Trisomy 13
– Turner syndrome – Gonadal dysgenesis
– Fragile X syndrome
– Klinefelter syndrome
– Angelman syndrome
– Cri-du-chat syndrome
– Other genetic syndromes
Other sources:
– NIH – Genetics Home Reference