Which of the following statements is true?
a. The hydrogen bonding of cytosine to
guanine is an example of complementary
base pairing.
b. In DNA, adenine always base pairs with
guanine, and cytosine always base pairs
with thymine.
c. Each of the four nucleotides in a DNA
molecule has the same nitrogen-containing
base.
d. When adenine base pairs with thymine,
they are linked by three hydrogen bonds.
e. None of these statements are true
Answer: a. The hydrogen bonding of cytosine to
guanine is an example of complementary
base pairing.
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An allele that is present but unexpressed is
A. codominant. B. dominant. C. pleiotropic. D. epistatic. E. recessive.
DNA microassays:
A. can reveal protein-protein interactions. B. demonstrate differential expression of genes. C. can reveal protein-RNA interactions. D. can be used to purify proteins that bind to epitope tags. E. are somewhat large and unwieldy but give a great deal of information.
A method used to link genetic markers with specific genes on chromosomes is called _____________. Fill in the blank(s) with the appropriate word(s)
If you forget to water your favorite plant, all of the following will occur at a cellular level EXCEPT
A) turgor pressure will build up in the cell. B) osmosis will occur. C) the plasma membrane will shrink away from the cell wall. D) water will move out of the vacuoles by osmosis. E) water will move out of the cytosol by osmosis.