Campbell Biology In Focus, Loose-leaf Edition (3rd Edition)
3rd Edition
ISBN: 9780134895727
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky
Publisher: PEARSON
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Textbook Question
Chapter 20, Problem 6TYU
If you were using cladistics to build a phylogenetic tree of cats, which of the following would be the best outgroup?
- A. wolf
- B. domestic cat
- C. frog
- D. leopard
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You want to construct a cladogram for all species of ducks, which are Birds (Aves). Explain why "presence of feathers" would not be a useful character trait to use to reconstruct their evolutionary relationships.
Using the cladogram below, answer the following question. The wolf, leopard, and domestic cat are all mammals that are meat-eaters with four legs and claws. Why is the wolf not classified with the leopard and domestic cat?
a
Wolves do not have retractable claws.
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Leopards and domestic cats have fur, while wolves do not.
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Both octopuses and cuttlefish have a single-lens eye. Their common ancestor also had a single-lens eye. What word describes the relationship between the octopus eye and the cuttlefish eye? a. homologous c. analogous b. vestigial d. convergent
Chapter 20 Solutions
Campbell Biology In Focus, Loose-leaf Edition (3rd Edition)
Ch. 20.1 - Based on the tree in Figure 20.4, are leopards...Ch. 20.1 - Which of the trees shown here depicts an...Ch. 20.1 - Prob. 3CCCh. 20.2 - Decide whether each of the following pairs of...Ch. 20.2 - WHAT IF? Suppose that two species, A and B, have...Ch. 20.3 - Prob. 1CCCh. 20.3 - The most parsimonious tree of evolutionary...Ch. 20.3 - Prob. 3CCCh. 20.4 - What is a molecular clock? What assumption...Ch. 20.4 - MAKE CONNECTIONS Review Concept 14.5. Then...
Ch. 20.4 - WHAT IF? Suppose a molecular clock dates the...Ch. 20.5 - Why is the kingdom Monera no longer considered a...Ch. 20.5 - Prob. 2CCCh. 20.5 - Prob. 3CCCh. 20 - In a comparison of birds and mammals, the...Ch. 20 - To apply parsimony to constructing a phylogenetic...Ch. 20 - Prob. 3TYUCh. 20 - Prob. 4TYUCh. 20 - Prob. 5TYUCh. 20 - If you were using cladistics to build a...Ch. 20 - Prob. 7TYUCh. 20 - SCIENTIFIC INQUIRY DRAW IT (a) Draw a phylogenetic...Ch. 20 - FOCUS ON EVOLUTION Darwin suggested looking at a...Ch. 20 - Prob. 10TYUCh. 20 - SYNTHESIZE YOUR KNOWLEDGE This West Indian manatee...
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- You are studying the evolution of a trait in two species of snakes where both species can flatten themselves so that they can glide from tree to tree. You know that this trait is not present in the ancestor of all snakes. With this information, is the trait a homology? a. Yes b. No c. Only in one of the species. d. Not enough information to tell.arrow_forwardThe figure shows a phylogenetic tree of various members of the order Proboscidea, which includes modern elephants. Which of the following claims is best supported by the information in the figure ? a.The mastodon and the Stegodon diverged from their common ancestor 22 million years ago. b.The common ancestor of the African elephant and the mastodon is the Palaeomastodon. c.The mammoth diverged from its most recent common ancestor with African elephants before the mastodon diverged from its most recent common ancestor with Stegodons. d.The Asian and African elephants are the most closely related species shown on the tree.arrow_forwardSince 1735, the Linnaean classification system has been the basic system for all taxonomy in biology. Which statement best explains the reason for changing how organisms are classified today? A. Organisms are evolving at a faster rate than in the past B. More diverse and complex organisms are being discovered C.  There are more organisms today than there were in the past D. New information about the genetics of species is being discoveredarrow_forward
- Suppose a new monkey species, Species A, has just been discovered. You are a primatologist, and you are trying to determine its phylogenetic position. You are sure its closest relatives are Species B and Species C, but you want to know which one it is more closely related to or if it is equally closely related to both. You are using Species D, a more distant relative, as the outgroup. You have come up with a list of ten characters you think will be useful in resolving this phylogeny, and you have determined the character state of each species for each character. The character states are: (in image below) Estimate the phylogeny of these taxa by plotting the changes on each of the three possible phylogenies for species A, B, and C and determining which tree requires the fewest evolutionary changes. HINT: First, review the carnivorans problem in Section 4.3 of the Zimmer and Emlen textbook. To solve the above problem, assume the outgroup has the ancestral character state for each…arrow_forwardFrom the cladogram below, answer the following:arrow_forwardWhich of the following is true regarding the way we define clades with characters? Select one: a. Autapomorphies are good characters to use because they describe every lineage of the clade and no other lineages b. Plesiomorphies are good characters to use because they describe every lineage of the clade and no other lineages c. Synapomorphies are good characters to use because they describe every lineage of the clade and no other lineages Please give me the correct answer quickly I will give you upvotearrow_forward
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Phylogenetic Mysteries: Crash Course Zoology #12; Author: CrashCourse;https://www.youtube.com/watch?v=cVaw7nF72Aw;License: Standard youtube license