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15 Cards in this Set
- Front
- Back
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Heritable changes in DNA underlying morphological differences between lineages _______________.
a. may have been caused mostly by transposons b. affected the onset, rate, and time of development steps c. both a and b |
C. both a and b
-may have been caused mostly by transposons. -affected the onset, rate, and time of development steps |
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Morphological convergences may lead to ______________.
a. analogous structures b. homologous structures c. divergent structures d. both a and c |
A. anlaogous structures
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A classification system that is _________ is based on presumed evolutionary relationship.
a. epigenetic b. credited to Linnaeus c. phylogenetic d. both b and c |
C. phylogenetic
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"Pinus banksiana", "Pinus strobus", and "Pinus radiata" are ___________.
a. three families of pine trees b. three different names for the same organixm c. several species belonging to the same genus d. both and c |
C. several species belonging to the same genus
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Increasigly inslusive taxa range from __________ to __________.
a. kingdom; species b. kingdom; genera c. genera; kingdom d. species; kingdom |
D. species; kingdom
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What is the 'accumulation of neutral mutations'?
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molecular clock
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What is 'stone hard evidence of life in past'
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fossil
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what is 'similar body parts in different lineages owing to common descent'
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homology
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e.g., shark fins, penguin flippers
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analogy
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evolutionary relationship among species, ancestors to descendants
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phylogeny
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layers of sedimentary rocks
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stratification
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Define 'Macroevolution'
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evolution theorized to occur over a long period of time, producing major changes in species and other taxonomic groups
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Define 'Microevolution'
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minor change within a species or small group of organisms, usually within a short period of time
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What is the difference between 'homologous and analogous structures'?
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Homologous-same body parts that are modified in different ways from a common ancestor.
Analogous-body parts that once differed, but converged in structure and function in response to similar environmental pressures. |
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What is the difference between 'morphological divergence and convergence'?
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Convergence- tendency of different species to develop similar characteristics in response to a set of environmental conditions.
Divergence-development of different characteristics by organisms that come from the same ancestor, caused by the influence of different environments. |
