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gene conversion

noun

Definition of gene conversion

: a genetic process that involves nonreciprocal meiotic recombination in heterozygotes in which a mismatched DNA sequence from one heteroduplex DNA strand is replaced with a sequence complementary to the other strand resulting in aberrant gametic ratios (such as 3:1) and that is observed especially in ascomycetous fungi

First Known Use of gene conversion

1955, in the meaning defined above

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More Definitions for gene conversion

gene conversion

noun

Medical Definition of gene conversion

: a genetic process that is sometimes associated with meiotic recombination in heterozygotes if heteroduplex DNA is formed, that involves the selective enzymatic excision of a mismatched DNA sequence from one heteroduplex strand and replacement with a nucleotide sequence complementary to the other strand so that the two DNA strands are genetically identical, and that results in aberrant gametic ratios (as 3:1 or 1:3 instead of 2:2)

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