21. Evolution

What did the discovery of Tiktaalik reveal about vertebrate evolution that was previously unknown?

Which of the following statements about vestigial structures is accurate?

Which of the following statements about the Denisovans is true?

What is the best explanation for the change in green anoles' toe pads over time?

The evolution of which of the following structures was a key innovation in vertebrate evolution?

Which of the following best describes a key theme of Chapter 5 in the context of evolution and natural selection?

Which method did scientists primarily use to determine the age of the Earth?

Which change in Earth's atmosphere was most crucial for the evolution of complex multicellular organisms?

The Laetoli footprint trail indicates what about the foot of Australopithecus?

Which of the following was likely an important factor in triggering the Cambrian Explosion?

Why have many animals developed horns and antlers?

Which statement most accurately describes the evolutionary relationships among the three domains of life?

In evolutionary biology, which term refers to more primitive features, such as teeth and tails, that appear in ancestral forms but may be lost or modified in descendants?

Which of the following is a key difference between plants and animals in terms of their evolutionary adaptations?

Which movie famously depicted a fossilized mosquito preserved in amber as a key plot element?