Loss of Heterozygosity and Its Importance in Evolution.
Loss of Heterozygosity and Its Importance in Evolution.
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DOI:
10.1007/s00239-022-10088-8
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发表时间:
2023-06
影响因子:
3.9
通讯作者:
Heil, Caiti Smukowski
中科院分区:
文献类型:
--
作者:
Heil, Caiti Smukowski
Loss of heterozygosity (LOH) is a mitotic recombination event that converts heterozygous loci to homozygous loci. This mutation event is widespread in organisms that have asexual reproduction like budding yeasts, and is also an important and frequent mutation event in tumorigenesis. Mutation accumulation studies have demonstrated that LOH occurs at a rate higher than the point mutation rate, and can impact large portions of the genome. Laboratory evolution experiments of heterozygous yeasts have revealed that LOH often unmasks beneficial recessive alleles that can confer large fitness advantages. Here, I highlight advances in understanding dominance, fitness, and phenotypes in laboratory evolved heterozygous yeast strains. I discuss best practices for detecting LOH in intraspecific and interspecific evolved clones and populations. Utilizing heterozygous strain backgrounds in laboratory evolution experiments offers an opportunity to advance our understanding of this important mutation type in shaping adaptation and genome evolution in wild, domesticated, and clinical populations.
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Bioinformatics (Oxford, England)
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