- Genes A, B, and C are three structural genes of an operon and fall in that order within the operon. A mutation occurs in Gene A that halts transcription early in the gene. What effect will this have on the levels of proteins produced by Genes A, B, and C?
- No proteins coded by genes A, B, and C will be produced.
- Proteins coded by genes B and C, but not gene A, will be produced
- Proteins coded by genes A, B, and C will be produced.
- Only proteins coded by gene A will be produced.
- Plasmids
- replicate with the bacterial chromosome.
- may contain antibiotic resistance genes.
- are as large as the bacterial chromosome.
- contain genes essential for growth.
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Write My Essay For Me- Interferons are an important part of the host defense against viral infections. Their principal mode of action is that
- they trigger the synthesis of one or more cellular proteins that inhibit viral replication.
- they are present in the serum of healthy individuals and act as viral surveillance factors.
- they coat viral particles and block their attachment to cells.
- they protect the death of a viral-infected cell.
- The form of genetic exchange by which donor DNA is introduced into a recipient bacterial cell by a bacterial virus is
- transformation.
- conjugation.
- transduction.
- transfection.
- vertical transfer.
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