Is reverse transcriptase a RNA-dependent DNA polymerase, or a DNA-dependent DNA polymerase?
A. It is neither. Reverse transcriptase is actually a DNA-dependent RNA polymerase.
B. It is a RNA-dependent DNA polymerase.
C. It is a DNA-dependent DNA polymerase.
D. It is both a a DNA-dependent DNA polymerase and a RNA-dependent DNA polymerase.
Answer: D
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You decide to study two species of birds, both of which form monogamous pairs (one male and one female). In species 1, you find that the eggs in a pair's nest are in fact almost always the offspring of that pair
In species 2, you are surprised to find that many of the eggs in a nest were actually fathered by males of neighboring pairs. Apparently, mating outside of monogamous pairings is widespread in species 2. Given this information, what would be the logical prediction to make before comparing testes size of males of the two species? A) Testes of species 1 are larger than testes of species 2. B) Testes of species 2 are larger than testes of species 1. C) There is no relationship between this observation and the size of testes.
An experimental study in which neither the doctor nor the patient knows who is getting the actual treatment is called
A. single-sided. B. double-sided. C. double-blind. D. double-barrier.
Compared to low tidal marshes, high tidal marshes are characterized by
A) lower salinity. B) decreased input of nutrients. C) higher tidal exchange rates. D) a phenotypically taller, greener cordgrass (Spartina).
If the wer gene were expressed in every root epidermal cell, the plant would
A. strengthen its attachment to the soil. B. greatly increase its absorptive capacity. C. greatly reduce its ability to exchange gases at the epidermal surface. D. increase in the diameter of its roots. E. greatly reduce its water and nutrient uptake.