Phylogeny and Systematics Quiz
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dbinderman_83534
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  • Question 1
    30 seconds
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    Q.

    If two species belong to the same class, then they must also belong to the same...

    answer choices

    Order

    Phylum

    Family

    Genus

    Species

  • Question 2
    30 seconds
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    Q.

    Three living species X, Y, and Z share a common ancestor T, as do extinct species U and V. A grouping of species T, X, Y, and Z make up...

    answer choices

    a valid taxon

    a polyphyletic grouping

    a paraphyletic grouping

    a monophyletic clade

  • Question 3
    30 seconds
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    Q.

    How would one apply the principle of parsimony to the construction of a phylogenetic tree?

    answer choices

    Choose the tree in which the branch points are based on as many shared derived characteristics as possible.

    Choose the tree that assumes all evolutionary changes are equally probable.

    Base phylogenetic trees only on the fossil record, as this provides the simplest explanation for evolution.

    Choose the tree that represents the fewest evolutionary changes, either in DNA sequences or morphology.

  • Question 4
    30 seconds
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    Q.

    What would be the best source of data for determining phylogenetic relationships of lineages of protists that diverged hundreds of millions of years ago?

    answer choices

    fossils from the Proterozoic eon

    morphological characters that are shared and derived

    amino acid sequences of their various chlorophyll molecules

    mDNA sequences

    rRNA gene sequences

  • Question 5
    30 seconds
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    Q.

    In a comparison of birds with mammals, having four appendages is...

    answer choices

    a shared primitive character

    a shared derived character

    an example of analogy rather than homology

    a character useful for sorting bird species

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