BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 21, Problem 4IQ
Why might the evolutionary line leading to Nannippus have experienced an evolutionary decrease in body size?
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Chapter 21 Solutions
BIOLOGY
Ch. 21.1 - Prob. 1LOCh. 21.1 - Prob. 2LOCh. 21.2 - Prob. 1LOCh. 21.2 - Distinguish between demonstrating that evolution...Ch. 21.3 - Contrast the processes of artificial and natural...Ch. 21.3 - Prob. 2LOCh. 21.4 - Prob. 1LOCh. 21.4 - Prob. 2LOCh. 21.4 - Prob. 3LOCh. 21.5 - Explain the evolutionary significance of...
Ch. 21.5 - Prob. 2LOCh. 21.6 - Prob. 1LOCh. 21.6 - Prob. 2LOCh. 21.7 - Characterize the criticisms of evolutionary theory...Ch. 21.7 - Prob. 2LOCh. 21 - Suppose that a male with a beak depth of 10 mm...Ch. 21 - Prob. 1IQCh. 21 - Prob. 2IQCh. 21 - Prob. 3IQCh. 21 - Why might the evolutionary line leading to...Ch. 21 - Artificial selection is different from natural...Ch. 21 - Gaps in the fossil record a. demonstrate our...Ch. 21 - The evolution of modern horses (Equus) is best...Ch. 21 - Homologous structures a. are structures in two or...Ch. 21 - Convergent evolution a. is an example of...Ch. 21 - Prob. 6UCh. 21 - The possession of fine fur in 5-month human...Ch. 21 - In Darwins finches, a. occurrence of wet and dry...Ch. 21 - Prob. 2ACh. 21 - Convergent evolution is often seen among species...Ch. 21 - What conditions are necessary for evolution by...Ch. 21 - Explain how data shown in figure 21.2a and b...Ch. 21 - Prob. 3SCh. 21 - Refer to figure 21.5, artificial selection in the...Ch. 21 - The ancestor of horses was a small, many-toed...
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- Can you suggest why, during the evolutionary history of animals, there has been a tendency for maximum body size to increase? Do you think it inevitable that complexity should increase along with body size? Why or why not?arrow_forwardWhy is amphioxus important in the story of evolution? What does its anatomy shed light on?arrow_forwardAgnathans (Jawless FIsh) Look at the image that is attached to this question to answer the questions I have How well developed is the skeleton. Is the notochord still evident? Is the skin smooth or rough? Can you see well-developed fins? What about the eyes?arrow_forward
- Why do you think the changes in Homo erectus with much larger body size, skull, and brain than Australopithecus occurred? How did these changes in physical appearance affect the behavior and survival of Homo erectus?arrow_forwardQUESTION 6: What are the general characteristics of reptiles?arrow_forwardWhat is the biggest, most obvious difference between the body structure of these two fish?arrow_forward
- (This is a nongraded question) Discuss how the circulatory system of cephalopods has been adapted to enable their active, predatory lifestyle.arrow_forwardSessile adult tunicates lose the notochord; what does this suggest about one function of this structure?arrow_forwardVery few fossils of Sahelanthropus have been found up until now, therefore we do not have a complete image of what its full skeletal anatomy might have looked like. What additional evidence would we need to find in order to better understand the locomotion of this species?arrow_forward
- Based on the anatomy and biological design of Bulbasaur given in the illustration, will it survive in the environment we have today? why or why not?arrow_forwardWhich animal does not undergo metamorphosis?arrow_forwardIs there a relevance for annelids between the following? Justify your answer. a. Their body color and their ability to adapt? b. Their body form and their ability to adaptarrow_forward
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