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.
Massive amounts of wood are stored on the forest floor of old-growth temperate coniferous forests of
The threespine stickleback (Gasterosteus aculeatus) has been used as a model organism for the study
Active Genes Discovered In The Developing Mammal Brain
Defying thousands of years of conventional wisdom, scientists are reporting that it is possible for
Some scientists believed that langur infanticide was influenced by human disturbance.
Golden toads in a Costa Rican Cloud Forest