Which of the following is a common feature of primary insect symbionts?
A) accelerated mutation rates
B) extreme genome reduction
C) high A+T / low G+C content
D) accelerated mutation rates, extreme genome reduction, and high A+T / low G+C content
Answer: D
Biology & Microbiology
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a. ectoderm only b. mesoderm only c. ectoderm only d. endoderm and mesoderm
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The oval window is indicated by the letter ____
a. A b. B c. C d. D e. E
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Scabies is a skin disease caused by a
A) slow virus. B) protozoan. C) mite. D) bacterium. E) prion.
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Which PCR step synthesizes complementary DNA strands?
A. Cool DNA to between 50°C and 65°C. B. Add primers. C. Repeat the cycle of heating and cooling. D. Add DNA polymerase and nucleotides at 72°C. E. Heat target DNA to 94°C.
Biology & Microbiology