Gynaecology & Obstetrics Least common cause of ambiguous genitalia in female genotype: A 21 hydroxylase deficiency B 11 hydroxylase deficiency C Fetal steroid sulphatase deficiency D WT1 gene 💡 Explanation Least common cause of ambiguous genitalia in female genotype: ✓ Correct Answer: C. Fetal steroid sulphatase deficiency