Genesis 1-3

Much is made of the paternalist consequences of women supposed being born out of the rib of man (secondary to the creation), however it seems that this ignores the reference in Genesis 1 to "humankind" being created, "male and female". Does this contradiction indicate the presence of editing or multiple writers? Also, why is it that we overlook the initial statement and take on the claim that women were fashioned from the rib of Adam? Is this not an example of using the bible not to construct, but rather to fit into our preconceived norms?