Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Textbook Question
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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Which group of mammals have live birth but lack a placenta?
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Metatheria
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Geological Epoch:
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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- Figure 12.3 In what levels are cats and dogs considered to be part of the same group?arrow_forwardAustralopiths are__________ a. extinct b. placental mammals c. hominoids d. all of the abovearrow_forwardThe forelimbs of the organisms in Figure 1 are examples of what type of structures? What do these structures indicate about the evolution of the three organisms? What would be an example of a structure analogous to the last structure? How does the anatomy of the forelimbs show an evolutionary pattern?arrow_forward
- Which of these are considered the first true primates? a.Anthropoids b.Proconsulids c.Euprimatesarrow_forwardWhich of the following is not a change that occurred through primate evolution? a size of teeth b change in DNA c location of spinal cord entering skull d size of brainarrow_forwardList at least five evolutionary changes that occurred with birds (each one should be from a different organ system)?arrow_forward
- Which of the following is the most likely organism to fossilize and be found in the fossil record? The earliest forms of bacteria A jellyfish with a soft body An octopus with a soft body A crustacean with a hard exoskeletonarrow_forwardAccording to the traditional classification of vertebrates, class Reptilia is a paraphyletic group because it does not include all descendants of a common ancestor. Which group has been left out of the classification but is really part of the reptile clade? Group of answer choices Birds Fish Amphibians Mammalsarrow_forwardIf you are a scientist studying the evolution of animals, what is the best approach you can use for analysis? analyzing behaviors of living animals with a common ancestry analyzing embryos and skeletons of animals of the same species analyzing DNA sequences and embryonic development analyzing the the fossilized remains of animals from different time periodsarrow_forward
- In the fossil record, as we advance forward in time, the more __________ and __________ the fossil primates become. Group of answer choices modified / specialized complex / cultural acquired / derived bipedal / dimorphic primitive / generalizedarrow_forwardIn the phylogeny shown in Figure 17.6, chordates (the phylum that includes humans) are most closely related to which other animal phylum?arrow_forwardPick a specific animal that exists today and research its ancestor from millions of years ago. How has this animal evolved? Compare it to the ancestor and explain why certain changes may have taken place.arrow_forward
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