Answer:
A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing raditation, exposure to chemicals called mutagens, or infected by viruses.
Explanation:
A mutation is a change in a DNA sequence.
<span>Pathogenic bacteria found in gastrointestinal tracts. </span>It's a <span>probiotic bacterium.
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<span> produced in the fetal bone marrow</span>
