Laboratory experiments about bacterial mutation rates have demonstrated which of the following?
A) Bacterial mutation rates rarely evolve in short-term laboratory experiments; they are a relatively fixed feature of a species biology.
B) In short-term laboratory experiments, bacterial mutation rates often evolve to be higher because higher mutation rates result in higher fitness.
C) In short-term laboratory experiments, bacterial mutation rates often evolve to be lower because mutations are typically deleterious for organisms.
D) Depending on the experiment, bacterial mutation rates sometimes evolve to higher rates, and other times evolve to lower rates.
B
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Four of the five answers listed below are related by a similar sensation. Select the exception
a. incus b. organ of Corti c. tectorial membrane d. oval window e. Pacinian corpuscle
The production of alcohol or lactate from pyruvate during __________ occurs as a means of
regenerating __________ from __________. a. aerobic respiration; NAD+; NADH b. fermentation; NAD+; NADH c. fermentation; NADH; NAD+ d. fermentation; ADP; ATP e. aerobic respiration; ATP; ADP
A mutation from the most prevalent form of a gene to a mutant form is called a ________ mutation.
A. escalating B. forward C. reverse D. wild card
If a couple was attempting to get pregnant, which foods should they eat to avoid ingesting high amounts of toxins?
A) High-fat salmon B) High-level carnivores such as tuna C) Meals microwaved in plastic bags D) Organic grains, fruits, and vegetables E) DDT-treated vegetables