What is the name of the large opening in the skull that allows the spinal cord to pass through?
A. cranial magnum
B. occipital foramen
C. parietal opening
D. foramen magnum
Answer: D. foramen magnum
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Some strains of leishmaniae have reservoir hosts, including dogs and wild rodents. Transmission is via the bite of a:
a. tsetse fly. b. tick. c. sandfly. d. triatomid bug.
Chromosome number _____
a. refers to a particular chromosome pair in a cell b. is an identifiable feature of a species c. is like a set of books d. all of these
The sperm in the figure below were most likely produced by:
a. nondisjunction.
b. mutation.
c. X-linkage.
d. translocation.
e. normal meiosis.
Female silk moths secrete a chemical called bombykol to attract male silk moths. Bombykol is a
A. stimulus. B. pheromone. C. method of communication. D. All of these answers are true.