Bacterial cultures are sometimes exposed to ultraviolet (UV) light in order to generate organisms with new genetic traits.Why do microbiologists choose to use UV light for this purpose?
A) UV light makes all cells antibiotic resistant.
B) UV light has the ability to cause changes in DNA.
C) UV light is the usual source of energy for bacteria, thus giving them more energy for evolution.
D) UV light promotes photosynthesis in bacteria.
Correct Answer:
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Q34: Mismatch errors are
A) almost always corrected by
Q35: Assume a cell present in your body
Q36: The adenine bases in a DNA molecule
Q37: Which of the following must occur for
Q38: Is a species that lacks DNA repair
Q40: Replication of DNA CANNOT begin until
A) phosphate
Q41: When the wrong base is inserted during
Q42: Housekeeping genes
A) prevent repressors from binding the
Q43: During DNA replication,the enzyme _ builds a
Q44: DNA _ results in the copying of
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