Evolution and Classification

For the Galapagos Finches, why do different islands have finches with different sized beaks?

• Beak shape on each island is random
• Birds with beaks best able to eat the food avalable on the island survived
• Particular beak shapes are best for protecting against predators
• Particular beak shapes are best for protecting against prey

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Why are beneficial traits more likely to be passed onto offspring because...

• organisms with beneficial traits are more likely to survive and reproduce.
• beneficial  traits come from dominant alleles.
• beneficial traits come from recessive alleles.
• the beneficial trait is aquired during the life of the organism.

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Mutations are a change in what?

• DNA
• tRNA
• genotype
• phenotype

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What is Natural Selection?

•  survival of the strongest organisms
•  survival of those organisms genetically best adapted to the environment
•  elimination of the smallest organisms by the largest organisms
• survival of the fastest organism

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Which of the following is a term for a group of similar organisms that can reproduce to make fertile offspring?

• domain
• population
• species
• kingdom

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Which of the following can be considered an example of a vestigial structure?

• the wings of an eagle hawk
• the hind limbs of a house cat
• the fins of sharks
• the wings of an ostrich

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Some organisms that share a common ancestor have features that have different functions, but similar structures.  These are known as

• vestigial structures
• fossil structures
• homologous structures
• dominant structures 

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What is suggested by the similarity of early embryos of different species of vertebrates?

• no evolutionary relationships between the groups
• very recent common ancestry
• similar environments in the past
• evolution from a distant common ancestor

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Two organisms that are closely related would have

• very similar DNA sequence
• exactly the same DNA sequences
• no proteins in common
• completely different DNA sequence

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Amino acid sequences in one organism's proteins that resemble those of another suggest a...

• coincidence
• lack of evolutionary relationship
• great number of mutations
• shared ancestry

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