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GodordirtZack

How did the Portuguese man-of-war evolve?

The man-of-war are actually four animals called zooids that cannot live without each other. So my questions is, how did they evolve? Also when. Please no links, put it in your own words. I have nothing against web-sites, its just that I don't always have time to read long articles.

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http://en.wikipedia.org/wiki/Portuguese_man_o_war

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Incredibella

You want knowledge without the effort of reading the answer? here it is " Through evolution over millions of years"

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GodordirtZack
It's not through laziness that I didn't want links to long articles. It's simply because I don't always have enough time to read them.
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Coevolution. Think bees and flowers. If that's to general, look up the Yucca Moth and the Yucca Plant. For an inverse scenario, look up the garter snake and rough-skinned newt. It's an evolutionary arms race!

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GodordirtZack
Your evidence?
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I've read papers on that newt Coevolution for one of my recitation classes. Basically, where the snakes are found to be the most venomous, the newts are found to be the most resistant. There was even an area where the snakes were not native to, and the newts were all but completely vulnerable to the venom. Natural selection took away their immunity because of the disadvantages it came with. It basically rewired their neuron pathways and made their reactions slower. That provided selection pressures that were acted on.

I could probably dig up a paper if you want to read it. I'm unfamiliar with the Coevolution of the Yucca plant/moth and the other animal you're referring to. I'm sure it similar. Do some research if you want to find out.
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