Which of the following kingdoms is a prokaryote?
a. protista
b. bacteria
c. arachebacteria
d. a and b
e. b and c
Answer: c. arachebacteria
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Which of the following processes generates a continuum (spectrum) of varying phenotypes?
A. Incomplete dominance B. Single-gene traits C. Multiple alleles D. Polygenic inheritance
The methanobacteria, halobacteria, and sulfobacteria are included in which domain?
A) eubacteria B) protista C) blue-green algae D) archaea E) all of the above
The openings in the exoskeleton of arthropods that allow oxygen into highly branched internal tubules that reach individual body cells are
A. spicules. B. alveoli. C. tracheae. D. spiracles. E. gills.
How many total haploid cells are produced by one diploid cell during meiosis?
A) 2 B) 1 C) 4 D) 8 million