I had sub chorionic hemorrhage, single umnlical artery and spina bifida in baby. what could be the cause for 3. pls hlp me with individual causes?

Potential causes: A dysmorphologist is a geneticist with a particular interest in the cause of birth defects, non-genetic, genetic, and multifactorial (the last being a combination of a genetic predisposition and an environmental "trigger"). Both the SUA and Spina Bifida occurred prior to your knowing that you were pregnant--before 11 days post conception. The subchorionic bleed occurred long after that