Sexual differentiation in humans Sexual differentiation in humans Sexual differentiation in humans is the process of development of sex differences in humans. It is defined as the development of phenotypic structures consequent to the action of hormones produced following gonadal determination. Sexual differentiation includes development of different genitalia and the internal genital tracts, breasts, body hair, and plays a role in gender identification. The development of sexual differences begins with the XY sex-determination system that is present in humans, and complex mechanisms are responsible for the development of the phenotypic differences between male and female humans from an undifferentiated zygote. Females have two X
What Else Is There? What Else Is There? "What Else Is There?" is the third single from the Norwegian duo Röyksopp's second album "The Understanding". It features the vocals of Karin Dreijer from the Swedish electronica duo The Knife. The album was released in the UK with the help of Astralwerks. The single was used in an O2 television advertisement in the Czech Republic and in Slovakia during 2008. It was also used in the 2006 film "Cashback" and the 2007 film, "Meet Bill". Trentemøller's remix of "What Else is There?" was featured in an episode of the HBO show "Entourage". The song was