Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 1, Problem 1.2CR
How could natural selection have led to the evolution of adaptations such as camouflaging coat color in beach mice?
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An adult human has a flat face with a small jaw and large cranium. An adult chimpanzee has a large jaw and small cranium. Both juvenile chimps and humans have heads similar to adult humans. Which of the following is a reasonable explanation for this pattern?
Group of answer choices
A) genes that modify skull shape are not expressed in chimps during development
B) head shape is controlled by cytoplasmic determinants
C)genes that modify skull shape are not expressed in humans during development
D) chimps and humans have completely different genes controlling the formation of the head
Darwin's studies of Galapagos finches are well known in the study of evolution. These studies have been instrumental in helping us understand how new species evolved from pre-existing species. Which statement is true about the speciation of the Galapagos finches?
A) The finches evolved traits to help them survive in different environments.
B) The finches had different traits that influenced the environment in which they chose to live.
C) Genetic variation occurred amongst the finches, giving some a genetic advantage in a changing environment, allowing them to better survive.
D) Members of the original population evolved in such a way that it became impossible for individuals from the two new populations to interbreed.
not graded
use photo
Which of the following examples from class show that a mutation can have evolutionary benefits?
Group of answer choices
C) Hox mutations that lead to legs developing on fruit flies where antennae should be
A and B
A, B, and C
B) Hox mutations leading to limbs with digits forming from lobe fins
A) Stickleback fish mutation
Chapter 1 Solutions
Campbell Biology (11th Edition)
Ch. 1.1 - Starting with the molecular level in Figure 1.3,...Ch. 1.1 - Identify the theme or themes exemplified by (a)...Ch. 1.1 - WHAT IF? For each theme discussed in this...Ch. 1.2 - Explain why "editing" is a metaphor for how...Ch. 1.2 - Referring to Figure 1.20, provide a possible...Ch. 1.2 - DRAW IT The three domains you learned about in...Ch. 1.3 - What qualitative Observation led to the...Ch. 1.3 - Contrast inductive reasoning with deductive...Ch. 1.3 - Why is natural selection called a theory?Ch. 1.3 - WHAT IF? In the deserts of New Mexico, the soils...
Ch. 1.4 - How does science differ from technology?Ch. 1.4 - MAKE CONNECTIONS The gene that causes sickle-cell...Ch. 1 - Prob. 1.1CRCh. 1 - How could natural selection have led to the...Ch. 1 - What are the roles of gathering and interpreting...Ch. 1 - Explain why different approaches and diverse...Ch. 1 - Prob. 1TYUCh. 1 - Prob. 2TYUCh. 1 - Which of the following best demonstrates the unity...Ch. 1 - Prob. 4TYUCh. 1 - Which of the following statements best...Ch. 1 - Which of the following is an example of...Ch. 1 - Which sentence best describes the logic of...Ch. 1 - DRAW IT With rough sketches, draw a biological...Ch. 1 - EVOLUTION CONNECTION A typical prokaryotic cell...Ch. 1 - SCIENTIFIC INQUIRY Based an the results of the...Ch. 1 - SCIENTIFIC INQUIRY Scientists search the...Ch. 1 - WRITE ABOUT A THEME: EVOLUTION In a Short essay...Ch. 1 - SYNTHESIZE YOUR KNOWLEDGE Can you pick out the...
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- What role do mutations play in the fragment presented above? How is the mechanism of natural selection represented in this situation? How does the reduction in body armor represent an adaptation?arrow_forward1) Darwin's studies of Galapagos finches are well known in the study of evolution. These studies have been instrumental in helping us understand how new species evolved from pre-existing species. Which statement is true about the speciation of the Galapagos finches? A) The finches evolved traits to help them survive in different environments. B) The finches had different traits that influenced the environment in which they chose to live. C) Genetic variation occurred amongst the finches, giving some a genetic advantage in a changing environment, allowing them to better survive. D) Members of the original population evolved in such a way that it became impossible for individuals from the two new populations to interbreed.arrow_forward1) Darwin's studies of Galapagos finches are well known in the study of evolution. These studies have been instrumental in helping us understand how new species evolved from pre-existing species. Which statement is true about the speciation of the Galapagos finches? A) The finches evolved traits to help them survive in different environments. B) The finches had different traits that influenced the environment in which they chose to live. C) Genetic variation occurred amongst the finches, giving some a genetic advantage in a changing environment, allowing them to better survive. D) Members of the original population evolved in such a way that it became impossible for individuals from the two new populations to interbreed. Not gradedarrow_forward
- How do the events surrounding the Peppered Moth during the industrial era in Great Britain support the theory of natural selection?arrow_forwardHow, specifically, is the concept of ALLOMETRY relevant to the phylogenetic position of Homo floresiensis? Because if allometry explains the anatomy of Homo floresiensis then we can conclude that it is not separate species but instead a member of our species. Although most mammals on islands go through a process of getting smaller, Homo floresiensis evolved from a smaller ancestor to be bigger, meaning that allometry is an important factor. Mutations in the allometry allele are associated with many of the characteristics of Homo floresiensis. Because Homo floresiensis is so much smaller than other members of the genus Homo, it is important to determine how shape changes associated with smaller size impacted the species. Because Homo floresiensis had both small- and large-bodied forms, variation within the species is in large part dictated by allometry.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_forward
- Some people think that many of our uniquely human traits arose by sexual selection. Over thousands of years, women attracted to charming, witty men perhaps prompted the development of human intellect beyond what was necessary for mere survival. Men attracted to women with juvenile features may have shifted the species as a whole to be less hairy and softer featured than any of our simian relatives. Can you think of a way to test these hypotheses?arrow_forwardThe 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?arrow_forwardJean-Baptiste de Lamarck’s explanation for the evolution of long-legged giraffes from shorter-legged okapi-like ancestors migrating to a savanna would not include which of the following features? over time, inheritance of acquired characteristics in okapis would lead to savanna giraffes once an okapi had acquired longer legs, it could pass on this new trait to its offspring only those okapis with favorable traits (long legs) could be ancestral to savanna giraffes each individual okapi could increase its leg-length by deliberate, consistent exercise okapis in a savanna habitat found it advantageous to stretch their legs for treetop leavesarrow_forward
- The 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_forwardWhat is Mount Improbable in Richard Dawkins' concept of evolution? a) A physical mountain where organisms evolve to survive at high altitudes b) A metaphorical mountain representing the difficulty of evolving complex adaptations c) A hypothetical location where new species originate d) A mountain range where convergent evolution occursarrow_forwarda) Is Figure 1 a cladogram, phylogram, or chronogram? b) According to Figure 1, all bears share a common ancestor with what group of mammals? c) What pair of bear species diverged most recently? d) The ancestor of what species of bear diverged the earliest from the ancestor of all other bears?arrow_forward
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