Figure 1From: The multiple sex chromosomes of platypus and echidna are not completely identical and several share homology with the avian ZFlow karyotype of T. aculeatus. The left panel shows the upper part and the right panel the lower enlarged part of the flow karyotype. The following chromosomes sort together: 13,14; 18,19; 20,21; and 25,26. Chromosomes 1, 6, and 27 each are polymorphic and are represented by two peaks.Back to article page