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.
Boreal forests, such as this one in Siberian Russia, are dominated by a few species of conifer trees
Massive amounts of wood are stored on the forest floor of old-growth temperate coniferous forests of
Scientists (group photo)
The recently discovered lleret calvaria from Kenya is the smallest H. erectus and shares many traits
Scientists with ice core
QTLs for Quantitative Phenotypes Organism