followup on platypus XXXXXXXXXX action

[eub]

Wikipedia says (as I load it right now; I wonder if it would be feasible for them to offer timestamped links that would be resolved by groveling back through the revision-control system) that that New Scientist article didn't pick up the coolest part of the Nature article they were reporting on. The coolest part is this:

These ten chromosomes form a multivalent chain at male meiosis, adopting an alternating pattern to segregate into XXXXX-bearing and YYYYY-bearing sperm. [...] The largest X chromosome, with homology to the human X chromosome, lies at one end of the chain, and a chromosome with homology to the bird Z chromosome lies near the other end. This suggests an evolutionary link between mammal and bird sex chromosome systems, which were previously thought to have evolved independently.

Word ladder! It's a chromosomal word ladder between birds and mammals! *bounce bounce bounce*

(The Wikipedia article also says "platypi". Hmf. But I can fix that.)