Which of the following factors would result in the allele frequency of a population not adding up to 1.0, as is the case in the Hardy-Weinberg rule?
A. Genetic drift
B. Inbreeding
C. A population changing due to selection
D. None of the answers, the allele frequencies must always equal 1.0
C
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Why did primates first evolve shoulders with an extensive range of motion?
a. To manipulate tools b. For predation c. For physical protection d. For manipulating food e. For climbing in trees
Trees are able to transport water from the roots to the top branches because
A. cohesion bonds water molecules to each other strongly. B. liquid water has a higher density than the air in the plant cells of the roots, trunk, and branches. C. water acts as a solvent of the tree cells as it moves upwards to the branches. D. adhesion bonds water molecules to the inside of the plant conducting tubes. E. leaves are hydrophilic.
Using structural characteristics to differentiate species on the basis of key physical characteristics is called the
A. morphological species concept. B. fitness concept. C. gene frequency concept. D. biological species concept.
The smallest known DNA virus, ________, has a ________-kilobase ________-stranded genome
a. megavirus / 1.75 / single b. circovirus / 1.75 / double c. megavirus / 175 / double d. circovirus / 1.75 / single