21. Evolution

Which of the following is the most likely ancestor from which animals evolved?

What was significant to Darwin about the fauna and flora of the Galápagos Islands?

What is the smallest unit that can evolve in a population?

The amniotic egg was a key evolutionary innovation because it allowed embryonic development to occur in which type of environment?

What does each branch point on an evolutionary tree represent?

Darwin originally defined evolution as __________.

What is the name of the group that consists only of modern humans and their direct ancestors?

Researchers can use molecular homologies to:

What is the ultimate goal of reproductive strategies in the context of evolution and natural selection?

Which of the following is thought to be the most closely related to the common animal ancestor?

In the context of evolution and natural selection, what is a capability that a shark possesses that a lamprey does not?

The modern idea of extinction as a common occurrence in Earth's history was first proposed in the early-19th-century writings of __________.

Which of the following is a key adaptation of the cacao tree (Theobroma cacao) that allows it to thrive in the tropical rainforest environment?

Which term refers to similar structures that related species have inherited from a common ancestor?

The breeding of plants and animals for particular traits by humans is called __________.