Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Textbook Question
Chapter 20, Problem 8TYU
The evolutionary conversion of reptilian scales into feathers is an example of (a) allometric growth (b) paedomorphosis (c) gradualism (d) hybrid breakdown (e) a preadaptation
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Chapter 20 Solutions
Biology (MindTap Course List)
Ch. 20.1 - Describe the biological species concept and list...Ch. 20.1 - Prob. 1CCh. 20.1 - Prob. 2CCh. 20.1 - Prob. 3CCh. 20.2 - Explain the significance of reproductive isolating...Ch. 20.2 - What barriers prevent wood frogs and leopard frogs...Ch. 20.2 - How is temporal isolation different from...Ch. 20.2 - Prob. 3CCh. 20.2 - Of which postzygotic barrier is the mule an...Ch. 20.3 - Prob. 3LO
Ch. 20.3 - Explain the mechanisms of sympatric speciation and...Ch. 20.3 - What are five geographic barriers that might lead...Ch. 20.3 - Prob. 2CCh. 20.3 - Prob. 3CCh. 20.4 - Prob. 5LOCh. 20.4 - Prob. 1CCh. 20.5 - Define macroevolution.Ch. 20.5 - Discuss macroevolution in the context of novel...Ch. 20.5 - Prob. 8LOCh. 20.5 - Why are evolutionary novelties important to...Ch. 20.5 - Prob. 2CCh. 20.5 - Prob. 3CCh. 20.5 - What is the relationship between mass extinction...Ch. 20 - A prezygotic barrier prevents (a) the union of egg...Ch. 20 - The reproductive isolating mechanism in which two...Ch. 20 - Interspecific hybrids, if they survive, are (a)...Ch. 20 - The first step leading to allopatric speciation is...Ch. 20 - The pupfishes in the Death Valley region are an...Ch. 20 - Which of the following evolutionary processes is...Ch. 20 - According to the punctuated equilibrium model, (a)...Ch. 20 - The evolutionary conversion of reptilian scales...Ch. 20 - Adaptive radiation is common following a period of...Ch. 20 - The Hawaiian silverswords are an excellent example...Ch. 20 - VISUALIZE Use two different colors to depict the...Ch. 20 - Prob. 12TYUCh. 20 - EVOLUTION LINK Could hawthorn and apple maggot...Ch. 20 - Prob. 14TYUCh. 20 - EVOLUTION LINK Examine Figure 20-2c and predict...
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- The pupfishes in the Death Valley region are an example of which evolutionary process? (a) background extinction (b) allopatric speciation (c) sympatric speciation (d) allopolyploidy (e) paedomorphosisarrow_forward4.)What definite characteristics shows relatedness of birds beak in terms of evolution and extinction? a.)the size of the beak changes due to the climate of a particular area. b.)the size of the beak changes due to their behaviour. c.)the size of the beak changes due to the availability of food in the environment. d.)the size of the beak remains the samearrow_forwardThe evolution of beak size in the various species of Galápagos finches is associated with their (a) songs (b) diets (c) body sizes (d) predators (e) none of the precedingarrow_forward
- Evidence suggest that feathers originally evolved for some function other than facilitating flight. This implies that (choose the best answer): a) Feathers are not currently an adaptation for flight. b) There was negative frequency dependent selection for feathers. c) Adaptations can evolve via the modification of pre-existing structures for a new function. d) Feathers arose via acclimatization. e) Natural selection anticipates future need and directs evolution accordingly.arrow_forwardWhich of the following evolutionary processes is associated with allopolyploidy? (a) gradualism (b) allometric growth (c) sympatric speciation (d) mass extinction (e) preadaptationarrow_forward24.) Based on the tree on the right, which statement is not correct? a) The salamander lineage is a basal taxon b) Salamanders are a sister group to the group containing lizards, goats, and humans c) Salamanders are as closely related to goats as to humans d) Lizards are more closely related to salamanders than to humans Salamander Lizard Goat Humanarrow_forward
- 375 million years ago, the population of organisms we call Tiktaalik had variation in many aspects of the appendages including the bones, muscles and nerves. What evolutionary force was likely most responsible for rapid adaptation and the relatively rapid evolution of limbs in this lineage? (A) natural selection (B) NONE of these C) mutations D genetic drift (E) speciationarrow_forward4.)What definite characteristics shows relatedness of birds beak in terms of evolution and extinction? a.)the size of the beak changes due to the climate of a particular area. b.)the size of the beak changes due to their behaviour. c.)the size of the beak changes due to the availability of food in the environment. d.)the size of the beak remains the same 5.)Why do organisms with close biochemical similarities show stronger evolutionary relationship? a.)They have similar pattern during their early stage of development. b.)They possess same vestigial structure that made their evolutionary relationship closer. c.)They have varied and different ancestry. d.)They have a common ancestor and have the same kind of protein.arrow_forwardAdaptive radiation is common following a period of mass extinction, probably because (a) the survivors of a mass extinction are remarkably well adapted to their environment (b) the unchanging environment following a mass extinction drives the evolutionary process (c) many adaptive zones are empty(d) many ecological niches are filled (e) the environment induces changes in the timing of development for many speciesarrow_forward
- In the evolutionary tree of vertebrates, birds are most closely related to: a) Mammals b) Crocodiles c) Placoderms d) Salamandersarrow_forwardTraits that are specialized to a particular lineage, and not widely shared among remotely related lineages, are called (a)ancestral (primitive) (b)derived (modified) (c) non adaptivearrow_forwardWhen two populations are reproductively isolated, what else must occur for speciation to happen? (a) gene flow (b) genetic divergence (c) coevolution (d) convergent evolution (e) none of the abovearrow_forward
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