Complex sentence: The male prostate is biologically homologous to the Skene's gland; it has been unofficially called the male G-Spot because it can also be used as an erogenous zone.
Split into simpler sentences: The male prostate is biologically homologous to the Skene's gland. The prostate in men has been unofficially called the male G-Spot because it can also be used as an erogenous zone.