The figure below shows the relationship between beak depth in the medium ground finch on Daphne Major and relative fitness. Assuming that beak depth is heritable, what do you predict about beak depth in the next generation?
A. Mean beak depth will stay about the same.
B. Mean beak depth in the next generation cannot be predicted using this data.
C. Mean beak depth will increase.
D. Mean beak depth will decrease.
Answer: A
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What will be an ideal response?
Optimal recovery and identification of anaerobic bacteria in clinical specimens occurs when:
a. the initial incubation period is at 35°C to 37°C for 48 hours. b. plates are incubated for at least 3 days before discarding as negative. c. the initial incubation period is at 35°C to 37°C for 24 hours. d. thioglycollate broth can be inspected daily for 3 days.
An action potential is a brief reversal of the
__________ potential. Fill in the blank(s) with the appropriate word(s).
The first question in this dichotomous key addresses
a. oxygen tolerance. b. bacterial morphology. c. metabolic characteristics. d. Gram stain differences.