The following table compares a human protein with that protein of other organisms. Each numbered column is a different amino acid position in the protein. If an organism's amino acid is the same as the human's, a dash (-) is shown. Otherwise, an abbreviation for the organism's amino acid is given.
Based on the data, what can you conclude about the relationship of humans to the other organisms? A) Humans and chickens can't be traced to a common ancestor. B) Humans and dogfish are the most closely related organisms. C) Humans and pigs have a recent common ancestor. D) Humans are not related to any of the other organisms.
