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What is meant by mutation: altered genes?

Biology
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What is meant by mutation? Please explain the different types of mutations briefly. Thank you.
Oct 10th, 2014

genetic mutation - (genetics) any event that changes genetic structure; any alteration in the inherited nucleic acid sequence of the genotype of an organism

chromosomal mutationmutation

genetic sciencegenetics - the branch of biology that studies heredity and variation in organisms

alterationchangemodification - an event that occurs when something passes from one state or phase to another; "the change was intended to increase sales"; "this storm is certainly a change for the worse"; "the neighborhood had undergone few modifications since his last visit years ago"

deletion - (genetics) the loss or absence of one or more nucleotides from a chromosome

inversion - (genetics) a kind of mutation in which the order of the genes in a section of a chromosome is reversed

transposition - (genetics) a kind of mutation in which a chromosomal segment is transfered to a new position on the same or another chromosome

mutagenesis - an event capable of causing a mutation

gene mutationpoint mutation - (genetics) a mutation due to an intramolecular reorganization of a gene

reversion - (genetics) a return to a normal phenotype (usually resulting from a second mutation)

saltation - (genetics) a mutation that drastically changes the phenotype of an organism or species

http://www.thefreedictionary.com/genetic+mutation

Oct 10th, 2014

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