Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) 5-alpha reductase deficiency ?
    ### Response:
    5-alpha reductase deficiency is a condition that affects male sexual development before birth and during puberty. People with this condition are genetically male, with one X and one Y chromosome in each cell, and they have male gonads (testes). Their bodies, however, do not produce enough of a hormone called dihydrotestosterone (DHT).
    