What would happen when one grows a recombinant bacterium in a bioreactor but forget to add antibiotic to the medium in which the recombinant is growing?

Explanation

### Step-by-Step Solution:

1. **Understanding the Role of Antibiotics**: In recombinant DNA technology, plasmids that carry the gene of interest often also carry an antibiotic resistance gene. This allows for the selection of successfully transformed bacteria.

2. **Setting Up the Bioreactor**: When a recombinant bacterium is grown in a bioreactor, it is typically expected that the medium contains antibiotics to maintain selection pressure on the bacteria.

3. **Absence of Antibiotics**: If antibiotics are not added to the medium, there will be no selection pressure on the recombinant bacteria. This means that there is no incentive for the bacteria to retain the plasmid that contains the gene of interest.

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