Assuming that species I is the ancestral species of the group, explain the most likely genetic mutation that produced the polypeptide in species II and the most likely genetic mutation that produced the polypeptide in species III. (30 points)

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.