The following when fljB has been deleted but fljA is still expressed in a cell: 1. The motility of cells. 2. The type of flagella produced. 3. The phase variation of cells. 4. The deletion of gene fliC. Introduction: Phase variation is a process in which the organism changes its shape and immunological appearance with the help of gene regulation so that the pathogen cannot be recognized by the antibodies. This leads to the wastage of antibodies produced for the original configuration of the pathogen and affects the organism. It is of two types: gene inversion and slippage-strand mispairing.

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Chapter 10.1, Problem 1TQ

Summary Introduction

To review:

The following when fljB has been deleted but fljA is still expressed in a cell:

1. The motility of cells.

2. The type of flagella produced.

3. The phase variation of cells.

4. The deletion of gene fliC.

Introduction:

Phase variation is a process in which the organism changes its shape and immunological appearance with the help of gene regulation so that the pathogen cannot be recognized by the antibodies. This leads to the wastage of antibodies produced for the original configuration of the pathogen and affects the organism. It is of two types: gene inversion and slippage-strand mispairing.

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