[medved]

Their genes did not change, they did not mutate, the body responded to their needs.

Within reasonable limits. You can flap your arms all day and all night and your body will not respond by growing flight feathers...

[AndrewC]

You can flap your arms all day and all night and your body will not respond by growing flight feathers...

Try a few jillion years. But you must also be trying to jump up or down trees.

[gore3000]

You can flap your arms all day and all night and your body will not respond by growing flight feathers...

Ya mean that if you swim all day in the water you will not grow fins? Why Darwinists have been saying that for 150 years. They have been teaching it to kids in schools. Now who would be so nasty as to lie to kids?