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SvennoJ said:
LivingMetal said:

I've seen some of these examples.  But birds are still birds, moths are still moths, toads are still toads, etc.  It's the ability to adapt to survive within their DNA structure.

There are plenty flighless birds, frogs start out as fish, caterpillars become butterflies. All species share a lot of the same DNA. DNA for a wing is very similar to DNA for a fins or a limb. There are plenty species that don't neatly fit into kindergarten classification. Species definition is a problem onto itself as there are no neat boundaries. For example Mesodinium chamaeleon crosses the boundary between plants and animals.

But they are still birds.  Was a frog really a fish, and did that "fish" matured into something else rather than a frog? And many insect are born as larve.  And there are similarities in regards to DNA.  That's doesn't mean I can sprout wings.