Homologous regions of mammalian X & Y chromosomes

The X & Y chromosomes share homologous sequence at the distal end of the long arm, which allows them to pair during mitosis and meiosis. The bulk of each chromosome sequence is specific, and includes the characteristic X- and Y-linked genes.

Figure ©2002 by Griffiths et al;. all text material ©2010 by Steven M. Carr