Introduction to Evolutionary Conservation: Difference between revisions

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Mutations occur spontaneously in each generation, randomly changing the amino acid sequences of proteins. Individuals with mutations that impair critical functions of proteins may have resulting problems that make them less able to reproduce. Harmful mutations are lost from the gene pool because the individuals carrying them reproduce less effectively. Over time, only harmless (or very rare beneficial) mutations are maintained in the gene pool. This is [[evolution]].
Mutations occur spontaneously in each generation, randomly changing an amino acid here and there in a protein. Individuals with mutations that impair critical functions of proteins may have resulting problems that make them less able to reproduce. Harmful mutations are lost from the gene pool because the individuals carrying them reproduce less effectively. Thus, the amino acids critical for the function of a protein are ''conserved''. In contrast, harmless (or very rare beneficial) mutations are kept in the gene pool, producing ''variability'' in non-critical amino acids.


==Examples==
==Examples==
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