This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Assessment of Fetal Growth and Development, Subject name: Pediatrics
Testes are not palpable in - 
Select and explain. 
A. SRY deletion, B. DAX 1 deletion, C. WNT- 4 gene mutation, D. RSPO-1 gene mutation
A: SRY deletion
Answer: A: SRY deletion 
Explanation: Ans. is 'a' i.e., SRY deletion o WT-1 and SF-1 genes stimulate genital ridge to form primitive (bipotential) gonad which then differentiate either into ovary or testis.o SRY geneis involved in development of male gonds (testes) from primitive (bipotential gonads)o DAX-1, WNT-4 and RSPO1 genes are involved in development of female gonads (ovary);