Instead of the typical XY pairing, some males may have an XXY chromosome configuration that may result in ________.
A. Klinefelter syndrome
B. Down syndrome
C. Fragile X syndrome
D. Prader–Willi syndrome
E. None of the above
A. Klinefelter syndrome
Biology & Microbiology
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Which vitamin helps older women retain calcium and diminish bone loss?
a. A b. D c. C d. B12 e. K
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A mass of hyphae is commonly referred to as
a. a mycelium b. a mycorrhiza c. a conidium d. a sporangium e. an oomycota
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Which cells directly attack abnormal cells in the body?
a. Cytotoxic T cells b. Helper T cells c. Phagocytes d. B cells
Biology & Microbiology