Prokaryotes may have:
a. one single circular chromosome.
b. many circular chromosomes.
c. one single linear chromosome.
d. A and B.
e. A, B, and C.
E
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Daphnia will switch from parthenogenesis to sexual reproduction under all of the following conditions except:
A. warm temperatures. B. decreased food supply. C. cool temperatures. D. accumulation of wastes. E. None of the answer options would cause Daphnia to switch.
Recognition sites of restriction enzymes are ________.
Fill in the blank(s) with the appropriate word(s).
Which of these is a key feature of the scientific method?
A. Scientific hypotheses must be testable. B. Experiments need not be repeatable. C. Science is moral. D. Once a hypothesis has been proved, it can never be changed.
List and explain the six steps in the hydrological cycle.
What will be an ideal response?