Which of the following is not affected by the presence of epigenetic marks?
A. development
B. imprinting
C. X chromosome inactivation
D. maturation of RNA
E. unique expression patterns in different cells
D
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Which term best describes the nitrogenous base adenine plus the sugar ribose?
A) adenine B) adenosine C) adenosine diphosphate D) adenosine triphosphate E) C followed by A or B
What was the most important factor in restoring the Curtis Prairie at the University of Wisconsin, Madison?
A. removal of alien intruders B. reintroduction of native bison C. planting seeds D. periodic fires E. allowing domestic livestock to disperse seeds
In creating a recombinant DNA molecule, what are two methods that prevent re-ligation of the cloning vector that contains no insert DNA?
What will be an ideal response?
Which macromolecule is the main component of all cell membranes?
a. DNA b. phospholipids c. carbohydrates d. steroids e. glucose