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Biology 10B Ch 15

QuestionAnswer
(T or F) Charles Darwin served as naturalist on the HMS Beagle True
(T or F) The environments that Darwin studied exhibited little biological diversity False
(T or F) While in the Galapagos Islands, Darwin noticed slight differences in the animals from one island to the next. True
(T or F) Darwin discovered that the Galapagos mockingbirds were different species. False
(T or F) Darwin named the process by which evolution proceeds artificial selection. False
Show that the species present on Earth have changed over time Fossils
Thought to be the ancestor of birds Dinosaur
Are newly evolved features such as feathers Derived traits
Are traits shared by species with a common ancestor Ancestral traits
Thought to be the ancestor of armadillos Glyptodont
Modified structure seen among different groups of descendants Homologous Structure
Eyes in a species of blind fish Vestigial structure
DNA and RNA comparisons that might indicate evolutionary relationships Comparative Biochemistry
Bird wings and butterfly wings that have the same function but different structures Analogous Structure
A body structure that is no longer used for its original function but that might have been used in an ancestor Vestigial Structure
(T or F) Evolutionary theory predicts that species respond to similar environments in similar ways. True
(T or F) Geographic distribution is the study of the distribution of plants and animals on Earth. False, Biogeography
(T or F) Similar environments can lead to the evolution of similar animals, even if they are not close relatives. True
(T or F) Traits that enable individuals to survive or reproduce better that individuals without those traits are called reproduction. False, fit
(T or F) Mimicry involves a harmless species that has evolved to closely resemble a beneficial one. True
Mimicry and camouflage are morphological adaptations that increase a species' fitness. True
Antibiotic resistance is a form of adaptation that causes some diseases to come back in more harmful forms. True
____________________ removes individuals with average trait values, creating two populations with extreme traits. Disruptive selection
The most common form of selection, _____________________ removes organisms with extreme expressions of a trait. Stabilizing selection
_____________________ will shift populations toward a beneficial but extreme trait value. Directional selection
________________ is a change in the size or frequency of a trait based on competition for mates. Sexual selection
One species will sometimes diversify in a relatively short time into a number of different species in a pattern called _________________. Adaptive radiation
The idea that evolution occurred in small steps over millions of years in a speciation model is currently known as __________. Gradualism
Species that encounter new environments can undergo change by Adaptive radiation, convergent evolution, coevolution
Adaptive radiation occurs when species become_______________, and leads to_____________ Different from their ancestors, Divergent evolution
Convergent evolution occurs when species become ________________, and leads to ____________________ More similar to unrelated species, Unrelated species with similar charactoristics
Coevolution occurs when two species _______________, and leads to _______________________ Change in response with each other, species with symbiotic relationahips
Created by: Danceman8
 

 



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