Monday, January 26, 2009
It's not everyday that you get to see such interesting examples of gynandromorphisms. Even the birds can do it too.

And interestingly, I just learned that order Lepidoptera (moths and butterflies) has an interesting sex determination system, whereby the male / female outcome is determined by the number of 'X' chromosomes present, rather than the presence of a Y chromosome. Additionally, it is the males that have 2 (or more) X's, and the females that have only 1 X. Apparently many birds and insects share this system.


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2001-2009 Andrew Lange