A) prostata bezi erkaklik jinsiy bezi hisoblanib, unda spermatozoid va androsteron ishlab chiqariladi
B) X-xromosomali spermatozoid va Y-xromosomali tuxum hujayra qoshilishidan erkak organizm rivojlanadi
C) bachadon boshligiga otgan homilaning tashqi qismida maxsus hujayralar birikmasi hosil bolib, u orqali homila bachadon devoriga birikadi
D) tuxumdonda uruglanish jarayoni sodir bolganidan song tuxum hujayra bachadon nayiga otib, rivojlanishni davom ettiradi