(a) Part A Which statement best explains what caused some theropods to develop feathers? A A mutation in DNA affected the types of proteins produced by placodes. B A protein in the placodes caused a mutation

(a)

Part A
Which statement best explains what caused some theropods to develop feathers?
A
A mutation in DNA affected the types of proteins produced by placodes.
B
A protein in the placodes caused a mutation in the gene that produces feathers.
C
A mutation in the placode gene caused placodes to produce different DNA.
D
A mutation in DNA caused the placodes that control genes to grow feathers.

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