Martin Olivier C, Hospital Frédéric
INRA, UMR de Génétique Végétale, Ferme du Moulon, 91190 Gif-sur-Yvette, France.
Genetics. 2006 May;173(1):451-9. doi: 10.1534/genetics.105.047175. Epub 2006 Feb 19.
We consider fixed recombinant inbred lines (RILs) derived either by selfing or by full-sib mating; when applicable, we also consider intermated recombinant inbreds (IRIs). First, we show that the usual estimate of recombination fraction based on RIL data is biased, and we provide an estimate where the major part of that bias is removed. Second, we derive simple formulas to compute the frequencies of genotypes at three loci in RILs. We describe the nonindependence of multiple recombinations arising in RIL recombination data even though there may be no interference in each meiosis. Finally, we give formulas for interference tests, gene mapping, or QTL detection in RIL populations.
我们考虑通过自交或全同胞交配产生的固定重组近交系(RILs);在适用的情况下,我们也考虑互交重组近交系(IRIs)。首先,我们表明基于RIL数据对重组率的常规估计存在偏差,并且我们提供了一种估计方法,其中大部分偏差被消除。其次,我们推导了计算RILs中三个位点基因型频率的简单公式。我们描述了RIL重组数据中出现的多重重组的非独立性,即使在每个减数分裂中可能不存在干涉。最后,我们给出了RIL群体中干涉检验、基因定位或QTL检测的公式。