A Certain Species of Bacterium Is Not Very Effective at Colonizing

question 18

Multiple Choice

A certain species of bacterium is not very effective at colonizing potato plants because the potato plants have a resistance gene that responds to the presence of the bacterium.Which of the following mutations would make the bacterium more successful at invading the potato plant?

• A)a mutation in the plant's resistance gene that made it heterozygous,leading to a mutant gene product that is able to recognize different avirulence factors
• B)a mutation in the bacterial avirulence gene that made the avirulence factor unable to bind to the plant's resistance factor
• C)a mutation in the plant's resistance gene that made the resistance factor able to bind more tightly to the avirulence factor
• D)a mutation in the bacterial avirulence gene that made the avirulence factor able to bind to a different resistance factor in the plant

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Definitions:

Referents

Objects or concepts in the world to which words, phrases, or symbols refer or denote in language and thought.

Differentia

The characteristic or set of characteristics that distinguishes one species or entity from another, especially in taxonomy or logic.

Ecclesiastical Jurisdiction

The authority and governance exercised by church leaders over church matters and its members.

Too Narrow

A critique suggesting that a description, definition, or focus is excessively limited or specific.