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Transfer of DNA between bacterial cells by viruses is called (transformation/transduction/conjugation).

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If the codon AAA is changed to AAG, it still codes for the amino acid lysine; this is an example of a


A) silent mutation.
B) nonsense mutation.
C) frameshift mutation.
D) dimer formation.
E) missense mutation.

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Bacterial strain A contains a plasmid. Bacterial strain B does not. When the bacteria are incubated together in a broth culture strain B cells containing the plasmid can be isolated. Devise an experiment to determine what type of gene transfer process is involved.

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A variety of answers are possible.For ex...

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All eukaryotes are diploid.

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The full set of genetic instructions of an organism is its (phenotype/genome/genotype).

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In contrast to leading strand synthesis, the lagging strand is synthesized 3' to 5', which is why it is slower.

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Genetic elements known as promoters are initiation points in the process of


A) DNA replication.
B) transcription.
C) translation.
D) mutation repair.
E) transformation.

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Most bacteria have a natural ability to take up DNA from their environment.

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The process of ________ requires the activity of DNA ligase.


A) translation
B) capping
C) transcription
D) DNA replication
E) transduction

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The effects of a transposition event are equivalent to a(n)


A) nonsense mutation.
B) missense mutation.
C) frameshift mutation.
D) silent mutation.
E) HFR conjugation.

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A polypeptide in a wild type microbe contains the sequence Leu-Pro-Tyr-Ser-Pro. A phenotypic variant of the species has the peptide sequence Leu-Pro-Cys-Ser-Pro. This is an example of a(n) ________ mutation.


A) nonsense
B) missense
C) silent
D) frameshift
E) inversion

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Describe the basic similarities and differences between DNA replication and transcription.

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DNA replication and transcription are si...

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DNA damage caused by nitrous acid results in ________ mutations.


A) insertion
B) substitution
C) deletion
D) frameshift
E) both insertion and deletion

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Which of the following is required for transposition?


A) F+ plasmid
B) bacteriophage
C) insertion sequence
D) donor cell
E) competence

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Except during initiation of translation, transfer RNA molecules carrying amino acids initially bind to the ribosome at the (P/A/E) site.

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