Would a nikon d80 lense 18-55mm fit on a nikon d60 body?

Would a nikon d80 lense 18-55mm fit on a nikon d60 body?

Yes, of course. Same mount. Same lens if you bought them as kits.

Of course. That is what camera systems are all about, modularity and interchangeability

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http://www.kenrockwell.com/...y-lens.htm

There are some lenses that can autofocus with the D80 but not the D60. All of the Nikon 18-55mm lenses have been AF-S, so that would not be a problem.