Individuals with complete androgen insensitivity (CAIS) _____, whereas individuals with partial androgen insensitivity (PAIS) _____.
1) are unable to respond to androgens, resulting in female external genitalia and internal structures
2) have reduced sensitivity to androgens, resulting in ambiguous genitalia and varying degrees of feminization
3) have normal sensitivity to androgens, resulting in male external genitalia and internal structures
4) have increased sensitivity to androgens, resulting in male external genitalia and incomplete masculinization