A new organism is discovered in the forests of Costa Rica. Scientists there determine that the polypeptide sequence of haemoglobin 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

Question

Quizplus · Accepted Answer

The new organism has fewer amino acid differences from the frog than from any of the other species, which suggests that it is more closely related to frogs than to any of the other species listed.

A New Organism Is Discovered in the Forests of Costa