Which group of microorganisms has the ability to mutate?

There are several types of mutations that are classified according to how the DNA molecule is altered. One type, called a point mutation, affects a single base and most commonly occurs when one base is substituted or replaced by another. Mutations also result from the addition of one or more bases, known as an insertion, or the removal of one or more bases, known as a deletion.

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they are made of gases.

they have a spherical shape.

they make energy through fusion.