Which of the following is a correct expression of the scientific name for lions?
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Which of type of traits are used in the study of cladistics?
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Which of the following displays the timeline of the evolution of different species from a common ancestor, often drawn as a tree-like diagram?
A phylogenic tree
An adaptation tree
A speciation tree
An ancestry treeQuestion
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Female stalk-eyed flies prefer to mate with males that have longer eye stalks, and the average male eye stalk length is much longer than that of females. This is an example of__________.
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Several different species of small nocturnal primates called, bush babies live in the woodlands of Africa. While several different species of bush babies often live in the same habitat they cannot interbreed because male bush babies have genitalia that will only fit the genitalia of females belonging to the exact same species. This is an example of which of the following?
A pre-zygotic barrier
A post-zygotic barrier
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The Harris's antelope squirrel only lives on the south rim of the Grand Canyon, while the closely related white-tailed antelope squirrel only lives on the norther rim of the Grand Canyon. The presence of the Grand Canyon reproductively isolates these two similar species from one another. This is an example of ______.
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Some fish have bony fins. If the body of water they are in dries out, these fins can be used to help the fish "walk" to another body of water. In this context, bony fins are an example of which of the following?
An evolutionary novelty
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Each branching point in a cladogram indicates ________.
a different level of biological classification.
movement of two species into two different habitats.
a point at which a geographic isolation occurred between two species.
a divergence from a shared ancestor.Question
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What makes a trait adaptive?
An adaptive trait is caused by mutations.
An adaptive trait causes speciation.
An adaptive trait increases fitness.
An adaptive trait is caused by a chromosomal abnormality.Question
10 of 20
The myrtle warbler and the Audubon's warbler were previously listed as two separate bird species that overlapped in parts of their ranges. But more recently scientists have described them as the eastern form and the western form of one yellow-rumped warbler species. Which of the following could explain why scientists now describe these birds as members of the same species instead of being two separate species?
Because the two populations overlapped, the two separate bird species were able to adapt to one another and evolve into being one species.
Scientists must have realized that the two populations looked nearly identical to one another. Therefore they must all be members of the same species.
Because the birds live in the same range, they must be members of the same species.
Scientists must have observed that birds from the two different populations were still able to successfully reproduce with one another to produce fertile offspring. Therefore they must all be members of the same species.Question
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According to the ______ model, species evolve relatively slowly by a series of small genetic changes over long periods of time.
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_______can keep two separate populations of the same species more similar to one another.
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Which of the following males in a given population would be considered the most fit in an evolutionary sense? One that produced______________.
1,000 offspring, of which 100 survived but 99 did not reproduce.
two offspring, both of which survived and produced offspring of their own.
10 offspring, of which 10 survived, but nine did not reproduce.
100 offspring of which 10 survived but nine did not reproduce.Question
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Which of the following would be a good example of a prezygotic reproductive barrier?
When a horse breeds with a donkey the offspring is sterile.
Two closely related species of beetles are able to breed and produce hybrid offspring. But though the offspring emerge as larvae, they always die before reaching adulthood.
Female fireflies will only mate with males who emit light in a particular pattern. They will not breed with males of closely related species who blink a slightly different pattern.
Hybrids of lion and tiger crosses are only sometimes fertile.Question
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Which of the following is an example of macroevolution?
The human species has become taller since its origin.
The frequency of antibiotic resistance in Staphylococcus bacteria has increased drastically over the past 30 years.
The Maui parrotbill species and the Akepa species of birds are both believed to have recently descended from the same common ancestor in the Hawaiian islands.
Female stalk-eyed flies prefer to mate with males that have longer eye stalks, and the average male eye stalk length is much longer than that of females.Question
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Which of the following is a good example of an evolutionary bottleneck?
Two populations of fruit flies are unable to mate because their reproductive organs do not properly fit together.
In 1814, a group of 15 people from Great Britain established a colony on a small island in the Atlantic. One of the colonists had a rare genetic disorder that causes vision loss. Two hundred years later, the frequency of this vision loss allele is 10 times higher on the island than it is in Great Britain.
A tree frog population contained equal allele frequencies for yellow skin and for green skin until a wild fire randomly killed almost all of the frogs. Now only yellow-skinned frogs are present in this population and the green skin allele appears to have been lost.
A tetraploid plant species evolves from a diploid ancestor. Both the tetraploid and diploid species are found in the same habitat.Question
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Which of the following is a domain that contains prokaryotes?
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The science of reconstructing the evolutionary history of organisms is called ______.
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Which of the following correctly lists the levels of biological classification from most specific to least specific?
domain, kingdom, phylum, class, order, family, genus, and species
species, genus, family, order, class, phylum, kingdom, domain
species, genus, order, family, phylum, class, domain, kingdom
domain, kingdom, class, family order, phylum, genus, speciesQuestion
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Speciation that occurs when no physical barrier divides the subpopulations is known as________.
a reproductive barrier.
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