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Genes are made up of smaller molecules strung together in a sequence,
much like words are composed of letters. When the sequence of
molecules that make up a gene changes, the function of the gene
may change as well. This is most often a bad thing, but occasionally
a mutation can be beneficial.
If this change occurs during the production of sex cells, the
mutation will manifest itself in the offspring and potentially
improve the offspring's chances of successfully producing offspring
of its own. |
