For 10 points, name this sex-determining chromosome which human males possess, in contrast to the X chromosome.
Swyer syndrome is caused by a defect in this structure. A defect in the AZF region of this structure can cause Sertoli cell-only syndrome. TDF is encoded by SOX genes, which have their locus on this structure. Because it cannot undergo recombination, this structure, the home of the SRY gene, may have lost over 90% of its genetic information. The "criminal" karyotype includes two of these chromosomes, which are also the smallest and most misshaped. For 10 points, name this sex-determining chromosome which human males possess, in contrast to the X chromosome.
Swyer syndrome is caused by a defect in this structure. A defect in the AZF region of this structure can cause Sertoli cell-only syndrome.
Y chromosome