A dance that recruits other bees into foraging 90 degrees to the right of the sun is indicated by flying ____.
A. straight up the comb
B. straight down the comb
C. to the left of vertical
D. to the right of vertical
E. in circles
Answer: D
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Assume that the mutation rate for a given gene is 5 × 10?6 mutations per generation. For that gene, how many mutations would be expected if 10 million sperm are examined?
A) none B) 5 × 10?6 C) 5 D) 50 E) 500
Which of the following can be defined as small proteins that are secreted from virally infected cells to prevent the spread of the infection?
A) macrophages B) mast cells C) immunoglobulins D) interferons
"Adaptation" is BEST defined as:
a) the process by which organisms become better matched to their environment. b) fitness. c) selection from the range of variation in a population for individuals of one extreme. d) the specific features that make an organism more fit in its environment. e) Both a) and d) are accurate definitions of "adaptation."
Of the following, which cleft is NOT correctly matched to the structures that have failed to fuse?
A. Bilateral Cleft of Secondary Palate - Maxillary and Lateral Nasal Prominences B. Median Cleft of Lower Lip - Mandibular Prominences C. Median Cleft of Upper Lip - Medial Nasal Prominences D. Oblique Facial Cleft - Maxillary Prominences, Medial & Lateral Nasal Prominences E. Unilateral Cleft of Upper Lip - Maxillary and Medial Nasal Prominence, Unilaterally