Fruit Flies Sick of Mating

-"When fruit flies mate, the females' genes are activated to roughly the same extent as when an immune reaction starts."
-This discovery was made at Uppsala University.
-This discovery is now appearing in the Journal of Evolutionary Biology.
-"Using a combination of behavioral studies and genomic technology, so-called microarrays, researchers at Uppsala University can show how fruit fly females are affected by mating."
-' "We monitor how genetic expression is impacted by mating and show that the most common process that is affected is the immune defense system," says Ted Morrow at the Department of Ecology and Evolution, Uppsala University.'
-Past researches show that if this problem wasn't a factor, female flies would produce 20% more offspring.

http://www.sciencedaily.com/releases/2009/02/090219081040.htm