Was there ever fluffly dinosaurs on this planet? ones with feathers? if there where than the answer should be pretty clear
Um... the ugly duckling was actually a swan's egg that a duck had nested on... so... no. Anywhos, mutations do occur after birth, but rarely is it not fatal, and even rarer does it actually benefit the victim (mssrs. banner and parker excepted). Usually mutation=cancer/stillbirth. But a chicken didn't come from some random, other bird, it's close relatives were probably very chicken-like, to the point where the two species would be almost inseperable. Oh, and as long as you have sexual reporduction, mutation really isn't the driving force of evolution.
"Dinosaurs" is such a broad term.....it doesn't just mean T-rex. And yes, there were fluffy ones...look at the Mammoth.
The version of the book that I have doesn't explicitly state this. Mutation is just as likely a theory as a switched egg. The switched egg doesn't even really make sense. Why would somebody go around switching eggs. In one of the discworld books by [size=-1]Terry Pratchett (I can't recally which one atm), evolution is presented as a sudden occurence. If I remember correctly, a bunch of the professor/wizards were stranded on an island about to get eaten by man-eating plants when the plants suddenly evolved into a non-man eating variety, thereby saving the wizards. The point being, I have documents somewhere in my storage closet that show that evolution can be a sudden, seamingly random thing, that can happen well after birth. [/size]
There were two main groups of dinosours, defined by the differences in their hip structures. One of these groups had bone structures that were remarkably similar to modern day birds. Current theories suggest that birds are direct decendents of dinosours in the exact same way that mammels are not. The archeopteryx that I mentioned earlier is thought of as the first bird. It was basically a bird-reptile hybrid.
The chicken could be related to the tyracluckdal or the McChickasarous rex. I say the chicken came first, because if the egg came first there would be nothing to sit on it.
So in theory then - it IS quite possible that the egg COULD have come first if that was the first egg in the chain to hatch into something we would define as a bird.Namely - a chicken - if it had evolved to that point from a dinosaur.The only trouble is is that you couldn't really put a date on it.But approximately I suppose - I don't really go for that quick evolution theory - nature isn't that great at SUDDENLY changing something I don't think.I mean eveb storms and floods come from a long chain of events but for bone structures to suddenly change.mmmm I say.Kangaroos are cool.
A) discworld occupies an extremely low position on the reality curve, so it is okay for there to be weird stuff like spontanous evolution, in fact Ponder Stibbons didn't think that it should have gone the way it did (cor, it's all just a bit of science-humor) B) Life evolved from Rincewind's egg-salad sandwich, which was given to him by the creator of the discworld. Mammals can't be dinosaurs, cause they aren't lizards.