EBK CAMPBELL BIOLOGY:CONCEPTS+CONNECT.
8th Edition
ISBN: 9780133890310
Author: Reece
Publisher: PEARSON CO
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Chapter 13, Problem 8TYK
Within a few weeks of treatment with the drug 3TC, a patient’s HIV population consists entirely of 3TC-resistant viruses. How can this result best be explained?
a. HIV can change its surface proteins and resist vaccines.
b. The patient must have become reinfected with a resistant virus.
c. A few drug-resistant viruses were present at the start of treatment, and natural selection increased their frequency.
d. HIV began making drug-resistant versions of its enzymes in response to the drug.
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As people use more of an antibiotic, the number of bacteria that are resistant to that antibiotic increase. Which statement describes a mechanism behind this trend?
(A.) People’s bodies become more resistant to antibiotics after exposure to them
(B.) Antibiotic molecules get weaker over time due to natural selection
(C.) The antibiotic kills sensitive bacteria, and any bacteria resistant to it multiply to take their place
(D.) Bacteria take up antibiotics and integrate them into their own DNA
Imagine that some lizards from both islands are brought to a laboratory and lizards from each population are separately bred for a generation. The offspring resemble their parents (i.e. they look like lizards from their home island). Does this support or contradict the idea that evolution has occurred?
Group of answer choices
a. support because it implies that a genetic change has occurred
b. contradict because the lizards were removed from the islands
c. support because the phenotype matches the environment
d. contradict because the environment is different in the lab
e. support because it is a major change in phenotype
Who developed the theory of Inheritance of Acquired Characteristics that suggested morphological changes that occur within an individual’s lifespan can be transmitted to offspring (also known as the use-disuse theory)?
Group of answer choices
A-Jean-Baptiste Lamarck
B-Alfred Russel Wallace
C-Erasmus Darwin
D-Thomas Malthus
E-James Hutton
Chapter 13 Solutions
EBK CAMPBELL BIOLOGY:CONCEPTS+CONNECT.
Ch. 13 - Summarize the key points of Darwins theory of...Ch. 13 - Complete this concept map describing potential...Ch. 13 - Which of the following did not influence Darwin as...Ch. 13 - Natural selection is sometimes described as...Ch. 13 - In an area of erratic rainfall, a biologist found...Ch. 13 - If an allele is recessive and lethal in...Ch. 13 - In a population with two alleles, B and b, the...Ch. 13 - Within a few weeks of treatment with the drug 3TC,...Ch. 13 - Prob. 9TYKCh. 13 - Write a paragraph briefly describing the kinds of...
Ch. 13 - In the early 1800s, French naturalist Jean...Ch. 13 - Sickle-cell disease is caused by a recessive...Ch. 13 - It seems logical that natural selection would work...Ch. 13 - SCIENTIFIC THINKING Cetaceans are fully aquatic...Ch. 13 - A population of snails is preyed on by birds that...Ch. 13 - Advocates of scientific creationism and...
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- Which is a question Lamarck MOST LIKELY would have asked when developing his evolutionary hypothesis? A. Is artificial selection the basis for evolution? B. Is evolutionary change the result of survival of the fittest? C. Can body structures change according to the actions of the organism? D. Can a small population size increase the rate of evolution?arrow_forwardwhich statement serves as evidence that Darwin’s theory of evolution had prediction power? a. It could be proven incorrect with the discovery of fossils of complex organisms found in the oldest fossil deposits. b. It could be proven incorrect with the discovery of amphibians and large land mammals on remote oceanic islands. c. It could be used to describe the evolution of large-billed finches on the Galapagos Islands. d. It could be used to hypothesize that fossils of the most primitive human ancestors would be found on the African continent.arrow_forwardWhich scientific concept did Charles Darwin and Alfred Wallace independently discover? a. mutation b. natural selection c. overbreeding d. sexual reproductionarrow_forward
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- Consider Lamarck’s idea in a hypothetical situation. For example, you decided that when you have children, you want them to be big ang strong. You decided to go to the gym every day for a year. You did all your exercise routines diligently and you were able to develop really bulky and toned muscles because you believed that your kids would inherit your big impressive muscles. Do you think this would work? Justify your answer using the concepts you have learned from Genetics, as well as Darwin’s concept of evolution.arrow_forwardWhy are humans so genetically similar within our species? A. Humans are not very genetically similar to one another. B. Because humans evolved in one location (Africa) and we have existed as a species for very long time. C. Because humans evolved in multiple locations around the world at different times. D. Because humans evolved in one location (Africa) and we haven't existed as a species for very long.arrow_forwardWhich is the best description of evolution? A. Animals become more complex over time. B. Plants become more complex over time. C. Life changes over time. D. Allele frequencies change in a population.arrow_forward
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