Psych M.D. - Mutation


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Term: mutation
Definition (Myers): a random error in gene replication that leads to a change in the sequence of nucleotides; the source of all genetic diversity.
Definition (alternative): A mutation is a permanent change in the DNA sequence of a gene. Mutations in a gene's DNA sequence can alter the amino acid sequence of the protein encoded by the gene. http://learn.genetics.utah.edu/archive/mutations/
Contextual explanation: go beyond the basic definition to explain what the term means with examples, etc.Mutations can occur simply because of copying errors that are introduced when the DNA replicates itself. Mutation can also occur as a result of DNA damage through sunlight, cigarette smoke, sunlight, etc. Mutations to control genes can transform one body part into another. Scientists have studied flies carrying Hox mutations that sprout legs on their foreheads instead of antennae
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Related terms and concepts: DNA, genome, genes
Related websites:
http://www.genetichealth.com/g101_changes_in_dna.shtml
http://evolution.berkeley.edu/evolibrary/article/0_0_0/mutations_05
http://evolution.berkeley.edu/evolibrary/article/0_0_0/mutations_03
Edited by: Max



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