Because of the complete lack of cytosine due to the defective Alpha-cytosinase, DNA replication cannot occur. This means that any zygote with<unk>  will be unable to divide into multiple cells and will thus die. In most cases, the mother won't even know that she would have had a baby if it hadn't died from<unk> .
Acytosiosis
Xanthosis
Macrocytosis
Hyperpigmentation
Neuroacanthocytosis
Anisocytosis
Poikilocytosis
Karyorrhexis