Consider the following sentence: "The dog did not eat." Which of the following variations of this sentence is most like a frameshift mutation?
A) The did dog not eat.
B) The dod idn ote at.
C) The did not eat.
D) The dog did dog did not eat.
Answer: B
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A bell-shaped curve of phenotypic variation is indicative of
A. incomplete dominance. B. continuous variation. C. multiple alleles. D. epistasis. E. environmental variables on phenotypes.
The archenteron of the developing frog eventually develops into which structure?
A) reproductive organs B) the blastocoel C) heart and lung D) digestive tract E) brain and spinal cord
Which of the following is most likely to occur when a tumor-suppressor gene is mutated?
A. The tumor-suppressor gene may be overactive. B. The resulting tumor-suppressor protein would further suppress cell proliferation. C. The resulting tumor-suppressor protein would activate an oncogene. D. The tumor-suppressor gene and resulting protein may lose its function and ability to suppress cell proliferation. E. None of the choices are possible.
A clear lake is likely to be ____
a. very old b. well-lit c. shallow d. recently formed e. experiencing high primary productivity