Which event may occur in all viruses,
prokaryotes, and eukaryotes?
a. duplication
b. aneuploidy
c. translocation
d. mutation
e. none of these
D
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Which structure is not a component of a carpel?
a. anther b. stigma c. style d. ovary e. ovule
Which of the following organisms is an ectotherm?
a. elephant b. lizard c. owl d. bat e. human
Humans share several features with salamanders. Certain genes and proteins are nearly identical between the two species; both species have four limbs with a similar skeletal structure; the species' early embryos are similar; and where the salamander has
a functional tail, humans have a vestigial tailbone. In evolutionary terms, these are examples of A) geographic similarity. B) homology. C) adaptation by natural selection. D) artificial selection.
Which list of muscle components is in the correct order from smallest to largest?
A) muscle, sarcomeres, myofibrils, muscle fibers B) sarcomeres, myofibrils, muscle fibers, muscle C) sarcomeres, myofibrils, muscle, muscle fibers D) myofibrils, muscle, sarcomeres, muscle fibers