Question

a change in DNA that is useful for one property to start with can become useful later for a different functions explain it

Answer 1

a common example of a change in DNA that is useful for one property to start with can become useful letter for a different function are the feathers of the birds

many years ago, the dinosaurs(reptiles ) had started to grow feathers which way used for protection against cold which overtime well developed by the birds are now used for flight