21. Evolution

Which feature is found in the common ancestor of the deuterostomes?

Which of the following observations most strongly supports the common origin of all life on Earth?

What is niche differentiation in the context of evolution and natural selection?

Which of the following processes includes all the others in the context of evolution and natural selection?

In which group of organisms did the vertebrate lung first appear?

Which statement provides the best evidence that two species share a recent common ancestor?

Why did Carl Sagan famously say that 'we are star stuff'?

Why is there more carbon-14 (\(^{14}\)C) in living bones than in once-living ancient bones of the same mass?

Which of the following is a criticism of the evolutionary theory of aging?

What do all craniates have that earlier chordates did not have?

What is the primary difference between microevolution and macroevolution?

Which of the following is an advantage that ectotherms have over endotherms of the same size?

What observation led Charles Darwin to propose that organisms originate from a common ancestor?

Which of the following statements best describes the overall process of descent with modification?

The fossil record indicates that the earliest hominids most likely originated on which continent?