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
A) is more closely related to humans than to frogs.
B) is more closely related to frogs than to humans.
C) evolved at about the same time as frogs, which is much earlier than primates and mammals.
D) is more closely related to humans than to rats.
E) is more closely related to frogs than to humans and also evolved at about the same time as frogs, which is much earlier than primates and mammals.
Cade and colleagues discovered a way to improve athletic performance and prevent salt and water imba
Cade and colleagues discovered a way to improve athletic performance and prevent salt and water imba
Rafflesia arnoldii, the world's biggest flower, lives as a parasite in Indonesian rain forests.
A transgenic organism
Costa Rican toad
Scattergrams are a mechanism used by political scientists to show patterns and relationships among v