Which of the following events is least likely to result in a genetic change in a bacterium?
A. specialized transduction
B. conjugation
C. generalized transduction
D. pilus formation
E. natural transformation
Answer: D
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Which of the following are malaria vaccines currently in development?
A) synthetic peptide vaccines B) recombinant particle vaccines C) DNA vaccines D) synthetic peptide, recombinant particle and DNA vaccines
Microorganisms were inoculated on two agar plates and incubated for 24 hours. After incubation, no microbial colonies were seen on the spread plate agar, but three microbial colonies were seen in the pour plate agar. What may account for this observation and how can growth of this microorganism be enhanced?
What will be an ideal response?
f you consider the combined processes of photosynthesis and cellular respiration, the electrons found in H2O at the beginning of the light reactions end up attaching to ________ during respiration.
-O2 to make new H2O -NADPH to make new glucose -pyruvate to make ethanol -electron transport carriers to make O2 -none of the above
Consider an animal that is a tetraploid. Following meiosis, how many copies of each homologous chromo-some will be found in the gametes?
What will be an ideal response?