According to scientists, the first sex to develop was female. The male gender then developed from the female sex. That is why males have nipples because females are the default sex in nature and males developed from that. The Borg collective has a female leader maybe because it is the default gender.
Females are the first sex/gender according to scientific research. Eve came before Adam in the real world.
I like this. In their search for perfection the Borg start with the first gender from which the other gender(s) develop.