After mixing a hat-killed, phosphorescent (light-emitting) strain of bacteria with a living, nonphosphorescent strain, you discover that some of the living cells are now phosphorescent. Which observation(s) would provide the best evidence that the ability to phosphoresce is a heritable trait?
A. Descendants of the living cells are also phosphorescent.
B. The phosphorescence in the living strain is especially bright.
C. Protein passed from the heat-killed strain to the living strain.
D. DNA passed from the heat-killed strain to the living strain.
Ans: A. Descendants of the living cells are also phosphorescent.
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The fact that genes associated with altruism are favored by natural selection if they lead to the reproductive success of
an altruist’s closest relatives is called _____. a. the theory of inclusive fitness b. survival of the fittest
c. evolution d. inbreeding e. selective mating
The letter “B” in the above figure represents the
__________ fin. a. anal b. pelvic c. pectoral d. caudal e. dorsal
Mendel's monohybrid experiment results led to his law of __________.
Fill in the blank(s) with the appropriate word(s).
After being fed glucose, a cell increases its intracellular glucose concentrations by
A. increasing membrane glucose transporters. B. decreasing glucose breakdown in the cell. C. increasing glucose synthesis in the cell. D. increasing membrane glucose receptors. E. decreasing glucose receptors on the cell.