Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Chapter 12, Problem 2ACQ
Figure 12.8 Which animals in this figure belong to a clade that includes animals with hair? Which evolved first: hair or the amniotic egg?
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Chapter 12 Solutions
Concepts of Biology
Ch. 12 - Figure 12.3 In what levels are cats and dogs...Ch. 12 - Figure 12.8 Which animals in this figure belong to...Ch. 12 - What is a phylogeny a description of? a. mutations...Ch. 12 - What do scientists in the field of systematics...Ch. 12 - Which statement about the taxonomic classification...Ch. 12 - Which best describes the relationship between...Ch. 12 - Which best describes a branch point in a...Ch. 12 - Which statement about analogies is correct? a....Ch. 12 - What kind of trait is important to cladistics? a....Ch. 12 - What is true about organisms that are a part of...
Ch. 12 - Which assumption of cladistics is stated...Ch. 12 - A monophyletic group is a ______. a. phylogenetic...Ch. 12 - How does a phylogenetic tree indicate major...Ch. 12 - List the different levels of the taxonomic...Ch. 12 - Dolphins and fish have similar body shapes. Is...Ch. 12 - Describe maximum parsimony.Ch. 12 - How does a biologist determine the polarity of a...
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- Through the phylogenetic tree of major groups of vertebrates provided below, answer the given table by numbering and naming each node in the diagram. Then list the names of each group and write down the shared characteristic(s) of it. You may add more rows if needed. Node Number (e.g. 1 - Gnasthostomata) Animal Group 1 Animal Group 2 Shared Characteristics of Animal Group 1 & 2arrow_forwardAnswer the following questions about this phylogenetic tree. What animal represents the out group in this tree and why? What is the derived characteristic of the birds? What is the shared characteristic of 3 to 6? Which number represents the common ancestor of Ostriches and Hawks?arrow_forwardIf you were to build a phylogenetic tree of living animals, which of the following derived characters would appear first? A. deuterostome development B. true tissues C. protostome development D. bilateral symmetryarrow_forward
- Figure 12.3 In what levels are cats and dogs considered to be part of the same group?arrow_forwardHow is it that most, if not all, of the extant animal phyla today evolved during the Cambrian period if so many massive extinction events have taken place since then?arrow_forwardWhich phyla did you not expect to be grouped together based on their morphology? How could morphological data alone lead biologists to group animals into erroneous evolutionary relationships?arrow_forward
- Which group of mammals have live birth but lack a placenta? Group of answer choices Metatheria Eutheria Prototheria Primatesarrow_forwardUsing various resources such as your school Library or the internet and discussions with your teacher, trace the evolutionary stages of any one animal, say horse.arrow_forwardHow might we know what the common ancestor of frogs and humans may have been? Where could we look for information?arrow_forward
- 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. convergentarrow_forwardFor about how many years of geological time have the dinosours existed on earth?? Did dinosours exist at the same time as humans? How do scientists determine when an era begins and when it ends? What is the purpose of making a geological timelinearrow_forwardWhat are homologous structures? A body structure that is present in one lineage but absent in another closely related lineage. Body structures that are similar but evolved independently in different lineages Body structures that are similar in different lineages because they are derived from a feature present in a common ancestorarrow_forward
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