A controlled study in which neither the patient nor the examiner is aware of whether the patient is receiving a treatment, is called a(n)
A. blind study.
B. variable study.
C. double-blind study.
D. adaptive study.
E. statistical study.
Answer: C
Biology & Microbiology
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a. crustaceans b. mollusks c. annelids d. chelicerates e. brachiopods
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A monosomic cell would produce gametes with how many chromosomes?
A) N B) N and N-1 C) N-1 D) N+1 E) N and N+1
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How do fossils provide evidence of evolution? How are scientists able to determine the age of fossils? What will be an ideal response?
Biology & Microbiology
The hierarchically arrayed groups indicated by colors in the figure above are called:
a. nodes. c. species. b. clades. d. genera.
Biology & Microbiology