Originally posted by rosebeforetime
Originally posted by Elfwood
In the past you had a dinosaur (we will call him BOB) (which are believed to have evolved in to birds) and it laid an egg now the creature in side
would be different from the parent dinosaur (BOB) and we will call this new creature (FRED). Now that creature will lay and egg and the genetic change
this time will cause the egg to contain the DNA of a chicken.
How on earth can a dinosaur lay an egg containing a chicken or a bird. That is absurd. I have never heard of a reptile laying an egg that has
hatched something with wings, it is illogical.
It was probably more along the lines of... Feathers came first, then feathers with stubs, then more feathers and bigger stubs, lighter weight bones,
etc. It didn't just come out and say "Baawk!", it evolved. Have you ever seen a walking catfish?
encarta.msn.com...
There are plenty of species today with strange, half-usable appendages on their bodies, or similar things that appear at first to be lame
freak-of-nature traits but with a million years of reproduction could become functional. It also works backwards, for instance, a species that is
gradually losing something - like a tail, for example.
Indeed, a t-rex didn't produce a chicken, but gradually certain types of dinosaurs became more and more birdlike until they became birds.
Zip
EDIT: I should add -- while many species of dinosaur became extinct, many simply evolved, and we are surrounded by them today.
[edit on 13-10-2004 by Zipdot]