Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 27.6, Problem 2CC
Summary Introduction
To determine:
Why it is incorrect to say that humans evolved from chimps.
Concept introduction:
The evolution is a process by which organisms accumulate changes over time and then diverge from their ancestors.
The evolutionary history of an animal can be traced by fossil records, molecular studies and others.
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Chapter 27 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 27.1 - Prob. 1CCCh. 27.1 - Prob. 2CCCh. 27.2 - What is the Cambrian explosion? Why is it...Ch. 27.2 - Prob. 2CCCh. 27.3 - Prob. 1CCCh. 27.3 - WHAT IF? Would it be accurate to describe the...Ch. 27.4 - Prob. 1CCCh. 27.4 - Describe two key adaptations of aquatic...Ch. 27.4 - MAKE CONNECTIONS The radiation of bilaterians in...Ch. 27.5 - Describe two adaptations that have enabled insects...
Ch. 27.5 - MAKE CONNECTIONS Compare and contrast how the...Ch. 27.6 - Describe three key amniote adaptations for life on...Ch. 27.6 - Prob. 2CCCh. 27.6 - WHAT IF? Which came first, the chicken or the egg?...Ch. 27.7 - Describe how ocean communities changed in the...Ch. 27.7 - Prob. 2CCCh. 27.7 - Prob. 3CCCh. 27 - Prob. 1TYUCh. 27 - Fossil steroid and molecular clock evidence...Ch. 27 - Which of the following was probably the least...Ch. 27 - Prob. 4TYUCh. 27 - Prob. 5TYUCh. 27 - Prob. 6TYUCh. 27 - Prob. 7TYUCh. 27 - FOCUS ON EVOLUTION In Figure 27.29, circle the...Ch. 27 - FOCUS ON ORGANIZATION Early tetrapods had a...Ch. 27 - SYNTHESIZE YOUR KNOWLEDGE Collectively, do these...
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- What does it mean then to say that humans evolved from apes?arrow_forwardA) Humans evolved from fish but fish have flimsy fins. b) Humans and chimps share 98.77 percent of their DNA but we are pretty darn different. c) If humans came from apes, why are there still apes?arrow_forwardWhat makes Archeopteryx an important fossil evolutionarily? This species has a mix of characters that suggest it was a "transitional" species between two large groups, dinosaurs and birds. This species is the oldest known, universally agreed upon, fossil of life, and therefore tells up what the common ancestor to all living things might have been like. This species is thought to be the last common ancestor between chimps and humans, and therefore is the root of our own specific group (homonins). This species has a mix of characters that suggests is was a "transitional" species between two large groups, fish and amphibians.arrow_forward
- How does Lamarck’s idea of “use or disuse” differ from Darwin’s idea, which was later called “descent with modification”? Can you guys help me with short answer?arrow_forwardWhich question below directly corresponds to whether Lamarck or Darwin are correct about their theories of the mechanisms of evolution? A.) Why don’t the shorter neck giraffes feed on grasses and lower vegetation? B.) How would the shorter necked giraffes in Lamarck’s theory survive to reproduce and pass on the “need” for longer necks if they were unable to reach food? C.) Why won’t the taller necked giraffes in Darwin’s theory provide assistance to the shorter giraffes since they are the same species? D.) Will the smaller giraffes be more adapted to hide from predators since they wouldn’t be visible from greater distances?arrow_forwardThe above image shows four different finches that Charles Darwin found while on the Galapagos Islands. This information led Darwin to develop the idea that organisms change, or evolve, over time. Which of these would best describe what Darwin saw as the MAJOR difference(s) between these finches? A) They all ate different food B) They all lived in different areas C) Both where they lived and what they ate were different D) Only their beak size was different and they lived together and ate the same food. Not Gradedarrow_forward
- What evidence did Georges Cuvier present that contradicted one of Jean-Baptiste Lamarck’s ideas? he identified fossil specimens of two large, extinct reptile species (the pterosaur and the mosasaur) he demonstrated that the Indian elephant and the African elephant were two different species he argued that specimens in the fossil record never changed much, so evolution was not occurring he claimed that divine creation was necessary to explain the origin of a new species he argued that natural catastrophes, like floods and ice ages, were common in the history of lifearrow_forwardWhat evidence is there that the 15 species of finch all evolved from one common ancestor? DNA analysis shows that their DNA is almost identical with only minor changes. Scientists have been studying them since Darwin in 1835 and have watched them evolve. Observation of all 15 species shows that they look incredibly similar, with minor changes to beak size and shape. These 15 species are found nowhere else in the world, and the islands are located close enough to the mainland for birds to migrate.arrow_forwardHow did darwin disproved lamarck? Why did darwin still thought that lamarck's work was very importantarrow_forward
- What did Darwin’s travels reveal to him about the number and variety of living species? How did tortoises and birds differ among the islands of the Galapagos? What is evolution? Why is referred to as a theory? Darwin found fossils of many organisms that were different from any living species. How would this finding has affected his understanding of life diversity?arrow_forwardWhat are the fundamental similarities and differences between lamarckism and darwinism?arrow_forwardHumans in the 21st century use their thumbs extensively to operate touchscreens on cellphones. Imagine a scenario, where the human population evolves to have more dexterous thumbs over the next 300 years. Which of the following is a Lamarckian explanation for this evolutionary change (and, therefore, would an incorrect evolutionary mechanism?) humans that develop more dexterity in their thumb over their lifetime due to frequent use of cellphones pass that ability to their children humans that were born with a mutation for more dexterous thumbs have more children thumb dexterity is a dominant traitarrow_forward
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