Further Reading: Girls
Tomboy ... While some tomboys later reveal a lesbian identity in their adolescent or adult years, behavior typical of boys but displayed by girls is not a true indicator of one's sexual orientation... Both assumptions were categorically refuted by twentieth-century psychology, which established the normality of the tomboy experience among girls of all identities...
Girl ... Girls develop female characteristics by inheriting two X chromosomes (xx), one from each parent. Etymology The English word girl first appeared during the Middle Ages between 1250 and 1300 CE and came from the Anglo-Saxon words gerle (also spelled girle or gurle)...