DNA probes
A. may be obtained from denatured tagged dsDNA.
B. may be obtained from similar genes from another organism.
C. may be synthesized usually using information based on the protein sequence.
D. are usually tagged dsRNA.
E.
may be obtained from denatured tagged dsDNA, may be obtained from similar genes from another organism, AND may be synthesized usually using information based on the protein sequence.
E
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When an impulse is traveling toward a negative electrode, this will appear as a(n) _________ deflection on the ECG.
Fill in the blank(s) with the appropriate word(s).
The significance of one new and one parental strand in each new DNA molecule would be that:
1.New strands are more susceptible to mutation.
2.DNA polymerase will only work on a parental strand.
3.Having an original strand is needed to prevent errors during the replication process.
4.Strands can only pair with existing strands.
Cancer may arise as a result of
A) mutations associated with viral infection. B) mutations associated with chemical mutagens. C) mutations associated with radiation. D) spontaneous mutations. E) All of these
Scientists observed that over the past 40 years, marmots are located at increasing elevations on mountains. What is the best explanation for this observation?
A. The marmots are adapting to the cold temperatures. B. Other species are competing with the marmots for their normal habitat. C. More snow and rain is falling at the top of the mountains. D. It is becoming colder at the top of the mountains. E. It is becoming warmer at the top of the mountains.