Detailed Instructions: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Q: These units are the site of dosage compensation. If an extra one of them is present, the extra undergoes lyonization to form an inactive Barr body. The lack or alteration of one causes Turner's Syndrome, while an extraneous one causes Klinefelter's Syndrome. Autism frequently results from a "fragile" one. They are home to the allele for color-blindness. For 10 points, name this larger of the two sex chromosomes that, in males, joins the Y.
A:
Social Science