Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Chapter 35, Problem 3S
In what respect is the evolutionary diversification of hominids similar to that of horses discussed in Chapter 21?
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The first modern humans evolved in Africa.
a) What are two kinds of evidence supporting that conclusion, one based on data from living individuals and one from some other source of data?
b) What are some unique anatomic and behavioral traits that are unique to hominid species compared to primates, and to Homo sapiens in particular, compared to other hominid species?
Explain the change in the classification of hominids in recent years. What hominoids are we now considered to be most closely related to?
Has Brain Size Increased as Hominids Evolved?
Chapter 35 Solutions
Biology
Ch. 35 - Which of the following structures is not a...Ch. 35 - Which of the following statements regarding all...Ch. 35 - In the figure, item A is the ______ and item B is...Ch. 35 - Prob. 4UCh. 35 - The ____ of the bony fish evolved to counter the...Ch. 35 - Why was the evolution of the pulmonary veins...Ch. 35 - Which of the following groups lacks a...Ch. 35 - All of the following are characteristics of...Ch. 35 - Which of the following evolutionary adaptations...Ch. 35 - The reason that birds and crocodilians both build...
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- Given the distribution of Hox genes among animals, what would you predict about the number and type of Hox genes in the common ancestor of all animals?arrow_forwardHow do paleoanthropologists explain why the earliest hominins evolved in Africa and not elsewhere?arrow_forwardWhat is the difference between a "derived" versus a “primitive" trait? Give an example of both, seen in Au. afarensis. Which of the paleoenvironment hypotheses have been used to describe early hominin diversity, and which have been used to describe bipedalism? Which anatomical features for bipedalism do we see in early hominins? Are these primarily obligate bipeds? Explain. Describe the dentition of gracile and robust australopithecines. What might these tell us about their relative diets? List the hominin species argued to be associated with stone tool technologies. Are you convinced of these associations? Why/why not?arrow_forward
- What is both the physical and cultural evidence that Homo sapiens nenaderthalensis is an ancestral hominin to Homo sapiens sapiens (modern humans)?arrow_forwardWhich statement is NOT true about the early hominins: A) The angle of the foramen magnum on Sahelanthropus tchadensis ("Toumai") indicates a vertically oriented upper neck, a clear sign of bipedalism. B) The reconstructed skeleton of Ardipithecus ramidus ("Ardi") suggests she was adapted for bipedal walking and climbing in trees. C) Early hominins such as Sahelanthropus and Ardipithecus had small, chimp-sized brain. D) All of the above are true.arrow_forwardWhat is a hominid?arrow_forward
- What is the common ancestor of humans and apes?arrow_forwardIn the paper “Four Legs good, Two Legs Fortuitous...” what were the selective pressures that drove early hominin evolution? How was Australopithecus physically different from modern day Homo sapiens? How did these traits suit each species to their environment? Describe the role of bipedalism in Homo sapiens evolution. Approximately how early did bipedalism occur?arrow_forwardIn what order of descent did the species of Homo overtake one another? What was discovered in the caves at Atapuerca, in northern Spain and what does this say about archaic Homo sapiens (Homo heidelbergensis in this case)? What is “Excalibur” and what did it signify (Maybe)? In what ways did our ideas about Neanderthals change as the 20th century proceeds? What recent discovery in the Meuse Valley, Belgium, helped to refine our views of Neanderthals? What kind of research is going at the Max Planck Institute in Leipzig, Germany, regarding evolutionary studies? Why are children’s teeth so valuable to archaeologists? Why was hunting such a risky business for Neanderthals? Why did Neanderthals go extinct about 25,000 years ago? (Note, since this film was made our ideas about this have changed as you will see in next week's film.) What is “the bottleneck effect”?arrow_forward
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