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Tuesday, October 18, 2005
Of Pandas and People
So, reading nature and I run across this article:
Evolutionary origin of insect wings from ancestral gills Sorry for all the non-science types who don't have nice institutional subscriptions to journals, but to sum up, this paper explains a likely origin for the innovation of insect wings from mutations in genes controlling development of gills in related crustaceans. We have isolated crustacean homologues of two genes that have wing-specific functions in insects, pdm (nubbin) and apterous. Their expression patterns support the hypothesis that insect wings evolved from gill-like appendages that were already present in the aquatic ancestors of both crustaceans and insects. That is all. |
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