A New Organism Is Discovered in the Forests of Costa

Multiple Choice

A new organism is discovered in the forests of Costa Rica. Scientists there determine that the polypeptide sequence of hemoglobin from the new organism has 72 amino acid differences from humans, 65 differences from a gibbon, 49 differences from a rat, and 5 differences from a frog. These data suggest that the new organism is more closely related to ________.

A) humans than to frogs
B) frogs than to humans
C) rats than to frogs
D) gibbons than to rats