Based on their anatomical and behavioral differences, biologists previously placed humans and chimpanzees in different families, but now DNA sequence data suggest that they are closely related and should be placed in the same family. What are some advantages of using DNA sequences to decide how to classify organisms? What might be some disadvantages?

The Swedish botanist Carolus Linnaeus was the first taxonomist to argue that, contrary to Aristotle: humans and horses should be classified in the same kingdom (Animalia) humans and apes should be classified in the same order (order Anthropomorpha, or Primates) humans and goats should be classified in the same kingdom (Animalia) humans and cats should be classified in the same order (order Anthropomorpha, or Primates) humans and dogs should be classified in the same kingdom (Animalia)

Name 3 of the 6 different categories of evidence used to document Evolution and what are the (2) categories of evidence for Morphology?

If two otherwise dissimilar organisms share similar genomic DNA, to what would you attribute the genomic similarity? A)DNA is not a reliable basis for phylogenetic decisions. B)The shared genes have evolved a number of times and have no phylogenetic significance. C)The shared genes are ancient and probably no longer function within the altered physiological states of modern organisms. D)The shared genes developed early in evolution and are likely to be applicable to a wide diversity of organisms. E)The two taxa are more closely related than formerly believed because they may share a common ancestor

18)

1. The taxonomic Supergroups of life are a work in progress which attempt to hypothesize on the relatedness of life's major groups. Currently this phylogeny includes a non-dichotomously branching clade with three different branches connecting to one node. The clade that includes all three branches emerging from the same node is known as A) homeoplasiac traits. B) polytomic lineages. C) paraphyletic clade. D) polyphyletic clade E) all of the above

Which of the following statements is correctly stated? Homology is due to ahared ancestry whereas analogy is due to convergentevolution. Analogy is due to shared anceatry whereas homology is due to convergent evolution. Homology is due to ahared biochemistry whereas analogy is due to shared molecular characteristics. Homology is due to shared morphology whereas analogy is due to shared molecular characteristics. S0000

a) What is the best estimate (mean age), in millions of years, for the divergence of the clade containing the American Giant Short Faced Bear from the clade containing the Sloth Bear? b) According to Figure 1, bears as a group experienced substantial evolutionary radiation near what geological boundary? c) True or False. An entire clade of bears has gone extinct because the two extinct bear species in the figure are sister species. d) What bears are the nearest relatives of the Sun Bear?