Term
| Regulation of gene expression is determined by: |
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Definition
| the frequency of initiating transcription |
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Term
| A segment of DNA encoding polypeptide is: |
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Definition
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Term
| A a functioning unit of key nucleotide sequences of DNA including an operator, a common promotor, and one or more structural genes, which is controlled as a unit to produce mRNA, in the process of transcription by an RNA polymerase: |
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Definition
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Term
| the segment of DNA that contains all the information for production of single polypeptide |
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Definition
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Term
| True or false: Most bacterial genes are monocistronic |
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Definition
| False: most bacterial genes are multicistronic |
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Term
| What is bacterial recombination? |
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Definition
exchange of genetic information between bacteria. progeny possess a combination of genes which are different (hybrid genomes) from the parental generation.
- Can be accomplished through 3 mechangisms: transformation, transduction, and conjugation
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Term
| Naked DNA derived from one cell or virus is taken up by another cell and recombines with the genome: |
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Definition
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Term
| DNA of one cell is introduced into another cell by virus infection: |
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Definition
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Term
| Generalized transduction: |
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Definition
| viral infection of a donor bacterium causes the denaturation and fragmentation of bacterial DNA. Viral replication and maturation may result in the incorporation of any portion of the bacterial genome into a viral capsid. The viral capsid containing bacterial DNA can infect and introduce the DNA into a recipient bacterium. This DNA may be incorporated into the nucleoid and expressed. |
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Term
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Definition
*bacterial sex.
*Males are F+ and Females and F-
*gene F promotes the formation of a sex pilus and replication of itself |
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Term
| Extrachromasomal genetic elements capable of autonomous replication |
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Definition
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Term
| segments of double stranded DNA that can move from place to place within a genome or between genomes. |
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Definition
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Term
| True or False: transposons carry genes controlling their own replication. |
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Definition
| False: they do NOT carry genes controlling their own replication, but possess insertion sequence elements which are responsible for transposability. |
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Term
| Small sequences of DNA that code for site specific recombination. |
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Definition
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Term
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Definition
| Carriers of foreign DNA that are used to introduce recombinant DNA in suitable hosts for replication and/or expression. The replicons or products derived from them are used in diagnosis adn therapy of microbial diseases. |
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