John Hoogland (1998 ) studied Gunnison's prairie dogs (Cynomys gunnisoni) and observed that an increase in litter size was observed when females ________
A) chose males that were the largest in the colony
B) mated with more than one male
C) extended the time of copulation with individual males
D) established a large territory for mating
B
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To control a disease in a population, 100% immunization is necessary
Indicate whether the statement is true or false.
Autotrophy has been observed among the ________.
A. cyanobacteria B. extreme thermophiles C. methanogens D. All of the choices are correct.
Which of the following life history traits of mice is NOT an advantage for its use as a model
organism?
a. Reproductive rate. b. Generation time. c. Small size. d. Maintenance in the laboratory. e. Large size.
Unlike the cell membrane, the cell wall is
A. found in all organisms B. composed of a lipid bilayer C. selectively permeable D. a rigid structure