Before revision: In utero development and genitalia Armenian boys at play alt=bangladeshi boys|180x180px|Bangladeshi boys, sitting in a tree In male embryos at six to seven weeks' gestation, "the expression of a gene on the Y chromosome induces changes that result in the development of the testes".
After revision: In utero development and genitalia Armenian boys at play alt=bangladeshi boys|180x180px|Bangladeshi boys, sittong in a tree In male embryos at six to seven weeks' gestation, "the expression of a gene on the Y chromosome induces changes that result in the development of the testes".