The document discusses normal sexual differentiation and various disorders of sexual development including: 1. Normal sexual differentiation involves establishment of chromosomal sex, gonad development, and genital differentiation under hormonal influences. 2. Disorders include seminiferous tubule dysgenesis (Klinefelter), 46 XX males, Turner's syndrome, gonadal dysgenesis, congenital adrenal hyperplasia, and androgen insensitivity. 3. Evaluation of ambiguous genitalia involves examination for testes, imaging of internal structures, labs, and potential for gender assignment and psychosocial well-being.