What trait in humans is correlated with the humidity in the air to which the group is adapted?
What will be an ideal response?
Nose shape
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In agarose gel electrophoresis, DNA is visualized by ____
a. staining the gel with an agarose-binding dye so the gel, but not the DNA bands, fluoresces under UV light b. staining the DNA with a DNA-binging dye that fluoresces under natural light c. staining the DNA with X-gal so that the DNA bands appear blue d. staining the gel with a DNA-binding dye that fluoresces under UV light e. staining the gel with a DNA-binding dye that fluoresces under natural light
Compared to uric acid, using urea as the main form of nitrogenous waste requires
a. more energy and water. b. less energy and water. c. more energy and less water. d. the same amount of energy and water. e. less energy and more water.
Hyaluronidase is a virulence factor in ________.
A. cold virus B. clostridia C. amoebic dysentery D. diphtheria E. ringworm
nutrient
What will be an ideal response?