These limbs provide evidence of common ancestry because they

Three species of lizards of the genus Gallotia are found on the Canary Islands, a chain of seven volcanic islands off the west coast of Africa. The easternmost island, Lanzarote, is the oldest, while the westernmost island, El Hierro, is the youngest. The distribution of lizard species is shown on the map below. Which statement about the ancestry of the lizards from the genus Gallotia is best supported by this information?

In 2010, scientists excavated a skull fossil that provides evidence of a newly discovered species of big cat. Based on the evidence, scientists hypothesize that big cats branched off from smaller wild cats about 6 million years ago. Which of these resources did the scientists most likely rely on to form their hypothesis?

Zoogeographic regions are characterized by the presence of specific groups of animals. These regions are determined by the taxonomic or phylogenetic relationships of animals. The map shows the zoogeographic regions proposed by the naturalist Alfred Russel Wallace in 1876. The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between the organisms in both locations?

Bactrian camels, dromedaries, llamas, and alpacas are all

members of the same taxonomic family, Camelidae. Members of this family all have two toes, no hooves, true canine teeth, and a split upper lip. The family Camelidae

originated in North America. The physical features of animals in this family and the family’s geographical origin provide evidence that all these animals —

Birds and reptiles are similar in that they are vertebrates and lay eggs. They differ in that reptiles have teeth and birds have beaks. Some birds do possess teeth. However, these teeth are present only in the embryonic stage. Which conclusion is best supported by the presence of teeth in bird embryos?

The fact that both these mammals incubate their immature offspring in a pouch provides evidence that they

Punctuated equilibrium is a theory that species are generally stable for long periods. Which of the following events would be an example of punctuated equilibrium?

Which statement is best supported by the information in this dendrogram?

If this model is correct, the greatest genetic differences would be found in the DNA sequences of which two species?

Genome maps provide the DNA sequences of chromosomes. Some scientists have compared the genome maps of a hedgehog and a sloth. What do these genome maps allow the scientists to determine?

A hypothesis that two organisms from different species are related to each other is best supported by

Bodily structures in mammals, such as the human appendix or the hipbone of a whale, are examples of

Which statement provides the best evidence that Ambulocetus natans is an ancestor of Basilosaurus isis?

The table shows a comparison of some amino acids found in cytochrome c. The two organisms in the table that are most closely related are

How do scientist explain the incomplete fossil record?

The table above shows percent differences in cytochrome c in four different mammals. According to the table, which two mammals are most closely related to each other?

The diagram illustrates how some characteristics of the horse have changed over time. Along with the difference in size, what is another anatomical difference between the modern horse and its ancestors?

Which information would best help scientists verify the

relationships among the organisms shown above?

Which of the following statements gives the most likely explanation for the presence of two very similar species of squirrels living on opposite sides of the Grand Canyon?

Structures that share a common ancestry or are similar because they are modified versions of structures from a common ancestor that contain the same basic bone structure are

The process in which organisms with traits well suited to an environment are more likely to survive and to produce offspring is

Structures with no function that are remnants of an organism’s evolutionary past are

The illustrations below show vestigial pelvic bones of a baleen whale and vestigial hind limb bones of an extinct whale. The presence of these bones in the baleen whale and extinct whale provides evidence of which of the following?

The formation of new species is a process known as ____________________, which is typically the product of divergence.