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The first analysis of the genome sequence of the duck-billed platypus has been published revealing clues about genome organization during the early evolution of mammals. “At first glance, the platypus appears as if it was the result of an evolutionary accident,” said Dr. Francis S. Collins, director of NIH’s National Human Genome Research Institute (NHGRI). “But as weird as this animal looks, its genome sequence is priceless for understanding how fundamental mammalian biological processes have evolved.” 

Image courtesy of NHGRI

 Interesting facts:

• The ancestors of the modern platypus split from the rest of mammalian lineage some 166 million years ago.
• The duck-billed platypus is one of the few mammals that lays eggs.
• The platypus is native to Australia.
• The platypus boasts what looks like a duck’s bill and houses an electrosensory system used when foraging for food underwater.
• Males also have venomous hind leg spurs.

For more information, go to:

http://www.nih.gov/news/research_matters/may2008/05122008platypus.htm