A male who inherits an extra X chromosome will have
A. Klinefelter syndrome.
B. Turner syndrome.
C. Down syndrome.
D. Polyploid syndrome.
E. Edward syndrome.
A. Klinefelter syndrome.
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An elephant and a mouse are running in full sunlight, and both overheat by the same amount above their normal body temperatures. When they move into the shade and rest, which animal will cool down faster?
A) The elephant will because it has the higher surface-area-to-volume ratio. B) The elephant will because it has the lower surface-area-to-volume ratio. C) The mouse will because it has the higher surface-area-to-volume ratio. D) They will cool at the same rate because they overheated by the same amount.
Carbon has an atomic number of 6. This means it has 6 protons and 6 electrons. How many valence electrons does carbon have?
a. 2 b. 6 c. 4 d. 3
The nitrogenous base found in DNA but not in RNA
is a. adenine. b. cytosine. c. guanine. d. uracil. e. thymine.
Which of the following whale species are recovering their population numbers as a result of whale harvesting regulations?I-right whalesII-Pacific gray whalesIII-sperm whalesIV-fin whalesV-humpback whales
A. I, II, and V B. I and II C. II and V D. I, II, III, and IV E. I, II, and III