What two atoms are found in all organic
compounds?
a. carbon and hydrogen
b. carbon and oxygen
c. oxygen and hydrogen
d. carbon and phosphorous
e. oxygen and sulfur
A
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In the 1960s, evolutionary biologists identified protein polymorphisms using ____, which allowed them to infer how
much genetic variation exists within populations.
a. genome sequencing b. gel electrophoresis c. artificial selection d. polymerase chain reactions e. DNA microarrays
The sum of all gene copies at all gene loci in all individuals in a population defines a ____
a. ploidy level b. genome c. polymorphism d. gene pool e. genetic database
Which phylum includes members with radial symmetry that use their two tentacles to capture prey?
a. Cnidaria b. Ctenophora c. Rotifera d. Nematoda
The pronghorn antelope of the United States and the saiga antelope of the central Asian steppes live in similar habitats and have similar adaptations. Which of the following features would you be surprised to find in a saiga antelope?
A) camouflaging coloration B) teeth adapted to grinding tough forage C) a warmly insulating winter coat D) a digestive tract without cellulose-digesting bacteria