Star and her brother, Mike, produce roughly the same levels of male hormones and female hormones. Given this information, it is likely that:
Star and Mike have not yet reached puberty.
Star has reached puberty but Mike has not.
Mike has reached puberty but Star has not.
Star and Mike have both reached puberty.
Psychology - PsyDAG, Wednesday, February 6, 2013 at 2:15pm
Before puberty, the levels of hormones are the about the same in both genders.