Unit III PRACTICE Exam #2
Choose the one alternative that best completes the statement or answers the question.
The ostrich and the emu look very similar and live in similar habitats, however they are not very closely related.
This is an example of
A) sympatric speciation.
B) divergent evolution.
C) convergent evolution.
E) adaptive radiation.
The correct sequence from the most to the least comprehensive of the taxonomic levels listed here is
A) kingdom, phylum, order, class, family, genus, and species.
B) phylum, family, class, order, kingdom, genus, and species.
C) phylum, kingdom, order, class, species, family, and genus.
D) kingdom, phylum, class, order, family, genus, and species.
E) family, phylum, class, kingdom, order, species, and genus.
Which statement represents the best explanation for the observation that the nuclear DNA of wolves and
domestic dogs has a very high degree of homology?
A) Dogs and wolves shared a common ancestor very recently.
B) Dogs and wolves have very similar morphologies.
C) Dogs and wolves are both members of the family Canidae.
D) Convergent evolution has occurred.
E) Dogs and wolves belong to the same order.
Which of the following would be an example of macroevolution?
A) evolution of polymorphism in
, with each morph mimicking a different protected butterfly
B) evolution of antibiotic resistance in a strain of
C) evolution of modern humans,
, from australopithecine ancestors
D) replacement of a melanin-poor morph by a melanin-rich morph over many generations under conditions of
increased UV exposure
E) evolution of insecticide resistance in populations of insect pests treated through the years with DDT
Use the following information to answer the following THREE questions below.
A large population of laboratory animals has been allowed to breed randomly for a number of generations. After
several generations, 36% of the animals display a recessive trait (
), the same percentage as at the beginning of the
breeding program. The rest of the animals show the dominant phenotype, with heterozygotes indistinguishable from
the homozygous dominants.