The phage Mu
A) has a circular genome.
B) repairs mutations in the host genome.
C) replicates by transposition.
D) has a circular genome, repairs host genome mutations, and can replicate by transposition.
In T7, the proteins that inhibit the host restriction system are synthesized
A) before the entire T7 genome enters the cell.
B) while the T7 genome is entering the cell but before it enters the nucleus.
C) after the T7 genome is completely within the host cytoplasm.
D) in response to the T7 genome binding to the host chromosome.
How are T7 genes transcribed?
A) Host RNA polymerase is modified to recognize the T7 promoter.
B) Host RNA polymerase directly translates the T7 genes.
C) T7 has its own RNA polymerase, which is packaged in its capsid and injected into the host during infection to transcribe T7 genes.
D) T7 has its own RNA polymerase, which must first be synthesized by the host.
How could overlapping genes in a positive ssDNA virus genome be predicted?
A) Convert the positive ssDNA into its complementary ssDNA and search for genes in the negative ssDNA strand for sequences used in more than one predicted gene.
B) Directly search the three frames of the positive ssDNA for genes that have sequences where more than one gene is predicted.
C) Convert the positive ssDNA into negative ssDNA and search all six possible frames for genes that use part of the same sequence.
D) Convert the positive ssDNA into its complementary ssDNA and search for genes in the negative ssDNA strand that also share a complementary gene in the positive strand.
The filamentous DNA phages are unusual, because they
A) are released from the host without the host being lysed.
B) have linear genomes.
C) replicate without a host.
D) are released from the host without being lysed and have linear genomes.
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