21. Mistakes may happen
during every copying process.
The same is true for DNA
replication. Are there
correction systems in cells
that try to fix those mistakes?
Under which situationare the
mistakes carried only by the
individual owner of the cell
within which the mistake has
occurred and in which
situation are they transmitted
to other individuals?

Gap-fill exercise

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The cell is equipped with an matic
system that tries to fix mistakes of the
DNA process. This system
however is not completely efficient.
DNA replication mistakes are kept in the
original individual where the failure
occurred when the phenomenon affects
cells.If a replication mistake
occurs in the formation of a
cell (e.g., in gametes) the DNA
alteration may be transmitted to the
offspring of the individual.