The molecular basis for the expression of the color trait depends directly on which of these cell functions?

Question

The answer choices are: Respiration, Photosynthesis, Protien Synthesis, Hormone Production

Answer 1

The question is not entirely clear but Protein Synthesis is always a primary factor in expression of any trait.  The shape of proteins determines their function.  The function of a protein in concert with other proteins or protein complexes are at the root of biological or phenotypic traits.