Four of the five conditions listed below are caused

by recessive genes. Select the exception.
a. Huntington disease
b. phenylketonuria
c. color blindness
d. hemophilia
e. albinism


Answer: a

Biology & Microbiology

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How many natural elements exist on Earth?

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The force of the original vibrations entering the ear is amplified by the

a. organ of Corti. b. oval window. c. round window. d. Eustachian tube. e. semicircular canals.

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-ray crystallography revealed several important features of the shape of DNA. Which one of the

following facts about DNA was NOT revealed by X-ray crystallography? A. The shape of the molecule is helical. B. The amount of purine bases equals the amount of pyrimidine bases. C. The molecule has a constant diameter. D. The phosphate groups are located on the outside. E. All of these were revealed by X-ray crystallography.

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Provides clues to identify a new disease or adverse health effect, identifies the extent of the public health problem and obtains a description of the public health problem that can be easily communicated

a. analytical epidemiology b. descriptive epidemiology

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