BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 21, Problem 6U
Summary Introduction
Introduction:
Biogeography is the study of interaction between living organisms and the geographical regions. According to Darwin, the change in the bio geographical situation gives rise to the change in the
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Why was Jean Baptiste Lamarck wrong about the mechanism of evolution?
A.
Because giraffes haven't evolved in billions of years.
B.
Because individuals do not pass on any traits that they acquire during their lifetime.
C.
Because individuals can change their traits during their lifetime and pass on those traits to their offpsring.
D.
Because he misunderstood the structure of DNA.
which 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.
Researchers have found fossils of Eocene horse species in Colorado. Deeper deposits contain smaller species, and more recent deposits contain larger species. How does this observation support the theory of evolution?
A.
It provides evidence that species change over time.
B.
It does not support the theory of evolution.
C.
It shows that all species are related to each other.
D.
It proves that environments have changed over time.
E.
It suggests that species are unchanging and of recent origin.
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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- Charles Darwin proposed that evolution could be explained by the differential reproductive success of organisms that resulted from their naturally occurring variation. Darwin called this process (a) coevolution (b) convergent evolution (c) natural selection (d) artificial selection (e) homoplasyarrow_forwardDarwin’s finches are a noteworthy case study of evolution by natural selection because evidence suggests a. they are descendants of many different species that colonized the Galápagos. b. they radiated from a single species that colonized the Galápagos. c. they are more closely related to mainland species than to one another. d. None of the choices is correct.arrow_forwardWhich of the following statements is inaccurate? Multiple choice (one answer is correct) a.The genetic variation that occurs in a population from mutation is non-random b.Natural selection is the only mechanism that consistently causes adaptive evolution c.Evidence demonstrates that whales evolved from land-dwelling organisms d.Natural selection acts on populationsarrow_forward
- Which of the following statements about evolution is false?a. Gene mutations alone amount to evolution. b. Genetic drift and gene flow are modern theories of evolution.c. Natural selection contributes to evolution.d. Chimpanzees evolved from a hominoid ancestor.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_forwardImagine 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 phenotypearrow_forward
- What is true about evolution by natural selection? a. It is a largely random process. b. Homology shows that convergence is a useful tool for deducing adaptive function. c. Mothers are invariably members of the same species as their offspring, so selection can never create new species. d. Harmful recessive genes are eliminated more rapidly than harmful dominant genes. e. None of the above is true.arrow_forwardDarwin emphasized that evolution via natural selection leads only to a) progress as defined by increasing heterogeneity. b) higher and lower forms within the same species of organism. c) the establishment of some societies that are more civilized than others. d) increasing adaptation between organisms and their given environment.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_forward
- What is an Analogy? A) When an anatomic feature is shared among organisms and their descendants B) When two organisms appear the same C) When convergent evolution produces similar phenotypesarrow_forwardWhy are humans so genetically similar within our species? A. Because humans evolved in multiple locations around the world at different times. B. Because humans evolved in one location (Africa) and we have existed as a species for very long time. C. Because humans evolved in one location (Africa) and we haven't existed as a species for very long. D. Humans are not very genetically similar to one another.arrow_forwardWhich 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_forward
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