5) A phylogenetic tree that is "rooted" is one
A) that extends back to the origin of life on Earth.
B) at whose base is located the common ancestor of all taxa depicted on that tree.
C) that illustrates the rampant gene swapping that occurred early in life's history.
D) that indicates our uncertainty about the evolutionary relationships of the taxa depicted on the
E) with very few branch points.
6) The correct sequence, from the most to the least comprehensive, of the taxonomic levels listed
A) family, phylum, class, kingdom, order, species, and genus.
B) kingdom, phylum, class, order, family, genus, and species.
C) kingdom, phylum, order, class, family, genus, and species.
D) phylum, kingdom, order, class, species, family, and genus.
E) phylum, family, class, order, kingdom, genus, and species.
7) The common housefly belongs to all of the following taxa. Assuming you had access to
textbooks or other scientific literature, knowing which of the following should provide you with
the most specific information about the common housefly?
A) order Diptera
B) family Muscidae
D) class Hexapoda
E) phylum Arthropoda
8) If organisms A, B, and C belong to the same class but to different orders and if organisms D,
E, and F belong to the same order but to different families, which of the following pairs of