A woman is found to have forty-seven chromosomes, including three X chromosomes. Which of the following describes her expected phenotype?

A) a female with masculine characteristics such as facial hair
B) an apparent male who is sterile
C) healthy female of slightly above-average height
D) a sterile female


C

Biology & Microbiology

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The most common of all nosocomial infections are ________ infections

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Photosynthesis occurs chiefly in the leaf's:

a. epidermis. b. bundle sheath extensions. c. mesophyll. d. trichomes. e. vascular bundles.

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High-energy electrons from molecules of NADH and FADH2 are transferred to a chain of proteins within the electron transport chain. What is the final protein in the electron transport chain?

A. ubiquinone B. NAD+ C. oxygen D. carbon dioxide E. cytochrome c

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Double fertilization is important to the reproductive process because it produces:

A. both the zygote and the endosperm B. a reaction that keeps the plant from dying C. a double portion of endosperm D. nutrition for the seed E. None of these is true

Biology & Microbiology