What is DNA hybridization?
What will be an ideal response?
DNA hybridization occurs when a short piece of DNA serves as a probe by binding to a specific DNA
sequence within a group of many DNA molecules. Essentially, hybridization takes advantage of the
normal property of single stranded DNA to base pair with its complement.
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The "high-mobility" of HMG proteins refers to their:
A. rapid movement from DNA sequence to DNA sequence. B. rapid electrophoretic mobility in polyacrylamide gels. C. abundant occupancy in chromatin. D. structural role in chromatin remodeling.
The logical conclusion that can be drawn from Wilcove's experimental data in the graph above is that
____.
a. songbird nests in a variety of habitats are equally likely to be found by predators b. songbird nests in forest fragments are more likely to be found by predators than those in intact tracts of forest c. songbird nests in forest fragments are less likely to be found by predators than those in intact tracts of forest d. songbird nests in rural areas are more likely to be found by predators than those in suburban areas e. songbirds that nest on the ground are more vulnerable to predators than those that nest in trees or shrubs
Each homeobox codes for a protein functional region that binds to a specific DNA sequence and thereby affects
translation. Indicate whether the statement is true or false.
Which of the following best describes why ionic molecules dissolve and dissociate in water?
A) Water is a polar, covalently bonded substance. B) Water is hydrophobic. C) Water is liquid at room temperature. D) Water is formed from nonpolar covalent bonds between oxygen and hydrogen.