Looking at This Evolutionary Relationship of Protein Kinases (Figure 51

Looking at this evolutionary relationship of protein kinases (Figure 51.6) and knowing there is evidence that this particular protein kinase is linked to food-related behaviors in the animals studied,what conclusions can you draw?

A) PKG influences food-related behaviors in a wide variety of animals.
B) There is enormous variation in amino acid sequences between taxa.
C) There is likely a conserved evolutionary relationship between these genes and their behavioral phenotype.
D) PKG influences food-related behaviors in a wide variety of animals,and there is enormous variation in amino acid sequences between taxa.
E) PKG influences food-related behaviors in a wide variety of animals,and there is likely a conserved evolutionary relationship between these genes and their behavioral phenotype.