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 letter “B” in the above figure represents the
__________ fin. a. anal b. pelvic c. pectoral d. caudal e. dorsal
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Fill in the blank(s) with the appropriate word(s).
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