Are there many factors that can cause the mutation for galactosemia?

Inherited. Galactosemia is a autosomal recessive inherited condition which causes you to metabolise galactose and other sugars incorrectly or differently. Autosomal recessive conditions usually come from both parent's--usually as carriers but not expresing the disease.There are many factors related to gene expression and gene abnormalities, but once you have the abnormality, it is not easy to determine.