gene conversion

gene conversion
noun
: 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, that results in aberrant gametic ratios, and that is observed experimentally especially in ascomycetous fungi (as of the genera Saccharomyces, Neurospora, or Aspergillus) in which the products of a single meiotic event are retained in one ascus

Useful english dictionary. 2012.

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  • Gene conversion — is an event in DNA genetic recombination, which occurs at high frequencies during meiotic division but which also occurs in somatic cells. It is a process by which DNA sequence information is transferred from one DNA helix (which remains… …   Wikipedia

  • gene conversion — gene conversion. См. конверсия генов. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • gene conversion — n 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… …   Medical dictionary

  • gene conversion — noun Date: 1955 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… …   New Collegiate Dictionary

  • gene conversion — A phenomenon in which alleles are segregated in a 3:1 not 2:2 ratio in meiosis. May be a result of DNA polymerase switching templates and copying from the other homologous sequence, or a result of mismatch repair (nucleotides being removed from… …   Dictionary of molecular biology

  • gene conversion —    The alteration of one strand of a heteroduplex DNA to make it complementary with the other strand at any position(s) where there were mispaired bases …   Forensic science glossary

  • gene conversion — A process, often associated with recombination, during which one allele is replicated at the expense of another, leading to non Mendelian segregation ratios …   Glossary of Biotechnology

  • polar gene conversion — polar gene conversion. См. полярная генная конверсия. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Conversion génique biaisée — La conversion génique biaisée (ou BGC pour Biased Gene Conversion en anglais) est un biais de réparation de l ADN conduisant à l enrichissement des séquences en paires G C. Sommaire 1 Mécanisme de la conversion génique biaisée 2 Conséquences de… …   Wikipédia en Français

  • Gene duplication — Schematic of a region of a chromosome before and after a duplication event Gene duplication (or chromosomal duplication or gene amplification) is any duplication of a region of DNA that contains a gene; it may occur as an error in homologous… …   Wikipedia

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