Imagine that you have sequenced the genome of a human pathogenic bacterium. In the early stages of analysis, you discover a stretch of DNA that has a significantly different GC content (the proportion of bases that are G and C)
Further examination of this region shows there are roughly one dozen protein-coding regions. These are not found in the genome of a previously sequenced and related nonpathogenic bacterium. These sequences do, however, predict protein products strikingly similar to those of another bacterial pathogen that is not closely related to the organism you are studying. You immediately suspect _____.
A) neutral evolution
B) that both sequences are introns
C) a high rate of mutation
D) a low rate of mutation
E) lateral gene transfer
Answer: E
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After infecting the cell, HBV's gapped DNA is released into the nucleus where host ________ enzymes fill the gap and seal the nick, yielding a covalently closed, circular DNA.
Fill in the blank(s) with the appropriate word(s).
The condition known as "Philadelphia chromosome" is an example of
a. inversion. b. deletion. c. duplication. d. translocation. e. aneuploidy.
which foods good source of fiber
What will be an ideal response?
A ________ genome exists as several separate, nonidentical molecules that may be packaged together or separately.
A. diploid B. fractionated C. polyploid D. segmented