Which example does not include a case of phenotypic variance?
A. A population of finches has their bill size increased by directional selection
B. A population of humans in which individuals differ in height
C. A population of bacteria is polymorphic for a single nucleotide polymorphism that resulted from a synonymous mutation
D. A genetically uniform population of barnacles express more muscular reproductive organs in wavy environments
E. A population of garter snakes with several color patterns use different escape behaviors
Answer: C. A population of bacteria is polymorphic for a single nucleotide polymorphism that resulted from a synonymous mutation
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Which of the following is a false statement about the motor proteins, myosin and kinesin?
A. They both use ATP energy. B. They both move cargo to the plus end of a cytoskeletal filament. C. They both move along microtubules. D. None of the above statements are false.
If you entirely cover all of a plant’s leaves with a very thick wax, which processes would be
affected?
a. photosynthesis b. transpiration c. Both processes would be affected. d. Neither process would be affected.
The relationship between the fungi and algae in lichens is best described as
A. a possible controlled parasitism wherein the fungi withdraw food from the algae and the algae do not benefit from the association. B. a possible controlled parasitism wherein the algae are moistened and protected by the fungi, but the fungi do not benefit from the association. C. a simple cooperative mutualism between normally free-living strains. D. an endosymbiotic transfer of the chloroplasts of algae to the hyphae cells. E. a complete mixing of the genomes of the two groups at the cellular level.
In the male, an enlarged ________ gland may squeeze the urethra, causing urinary retention
Fill in the blank(s) with correct word