The Figure Shown Below Is a Picture of a Gel

question 34

Multiple Choice

The figure shown below is a picture of a gel with multiplex PCR products from Clostridium botulinum isolates. Lane 1 contains DNA molecular weight markers and lanes 2-5 are positive strains as controls for toxins type A, type B, type E, and type F, respectively. Based on the bands shown, what can we say about the isolate results in lane 6?

• A) The isolate in lane 6 produces all four toxins but not endotoxin.
• B) The PCR products from isolate in lane 6 are consistent with that isolate having toxins A, F, and B but not E.
• C) The isolate in lane 6 produces all four toxins.
• D) There is no band for endotoxin in lane 6 but the isolate makes three other toxins.
• E) The gel shows definitive proof that this strain produces three toxins.

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Definitions:

Social Identity Theory

Social identity theory is a psychological framework that posits individuals derive part of their identity and self-esteem from the groups to which they belong.

Status Quo

The existing state or condition of a situation, which is often seen as the standard or norm.

Entitativity

The perception or degree to which a group is seen as being a coherent, distinct, and unified entity.

Ingroup Bias

The inclination to prefer individuals from one's own group rather than from other groups.