which of the following statements is an example of a phenocopy? A. Phenylketonuria results from a recessive mutation that causes light skin as well as metal retardation. B. Human height is influenced by genes at many different loci. C. Dwarf plants and motted leaves in tomatoes are caused by seperate genes that are linked. D. Vestigial wings in Drosophila are prodcued by a recessive mutation. This trait is also produced by high temperature during development E. Intelligence in humans is influenced by both genetic and environmental factors. Solution Answer is (D). D. Vestigial wings in Drosophila are prodcued by a recessive mutation. This trait is also produced by high temperature during development.