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While conducting research you notice that when a barrier is added to not allow cell-cell interactions,...

While conducting research you notice that when a barrier is added to not allow cell-cell interactions, genetic exchange no longer occurs in your bacteria. What can you conclude about the method of genetic exchange that was occurring?

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Answer #1

Out the three ways in which genetic exchange can occur in bacteria, conjugation is the only method that requires cell-cell interaction, the other two methods being transduction and transformation.

In conjugation, a direct contact between cells is required for the formation of the conjugatiin tube. Exchnage of genetic material occurs via this conjugation tube. If a barrier prevents cell-cell interactions, conjugation will not take place. Thus, in the above experiment, the method of genetic exchange was conjugation.

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