redundancy

(noun)

duplication of components, such as amino acid codons, to provide survival of the total system in case of failure of single components

Related Terms

  • nucleotide
  • amino acid

Examples of redundancy in the following topics:

  • Transcription in Prokaryotes

    • Degeneracy is the redundancy of the genetic code.
    • The genetic code has redundancy, but no ambiguity.
    • For example, although codons GAA and GAG both specify glutamic acid (redundancy), neither of them specifies any other amino acid (no ambiguity).
  • Whole-Genome Duplication

    • Genome doubling provides organisms with redundant alleles that can evolve freely with little selection pressure.
  • Gene Duplications and Divergence

    • Duplication creates genetic redundancy and if one copy of a gene experiences a mutation that affects its original function, the second copy can serve as a 'spare part' and continue to function correctly.
    • Neither gene can be lost, as both now perform important non-redundant functions, but ultimately neither is able to achieve novel functionality.
  • Brain: Cerebral Cortex and Brain Lobes

    • Although there are some brain functions that are localized more to one hemisphere than the other, the functions of the two hemispheres are largely redundant.
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