If embryonic testes do not produce testosterone, a genetic male develops female external genitalia. however, if embryonic testes properly produce testosterone, but a genetic male nevertheless develops female external genitalia, the cause could be

If embryonic testes properly produce testosterone, but a genetic male nevertheless develops female external genitalia, the cause could be a mutation in the gene that codes for the testosterone receptor.

Mutation of gene means, change in the sequence of DNA (deoxyribonucleic acid). A genetic disorder is a condition when mutations occurred in one or more genes.

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .