V. Guiard (FBN Dummerstorf, Germany)

Multiple Test Problems in Detecting of Genes - a small overview

In order to detect quantitative trait loci (QTL), influencing a special trait, for every position of the chromosomes it will be tested whether there exists a QTL or not. For a simple situation, if the test statistic is considered as a function on the position on a chromosome, it varies according to the square of an Orenstein-Uhlenbeck diffusion process. For more complicated situations the overall error will be controlled by means of a permutation test. Both apperoaches assume the overall null hypothesis that there is no Gene influencing the trait of interest. For every inheritable trait there will by be at least one Gene on the genom. Therefore Weller etal applied the concept of the false discovery rate for detecting QTL.

References:

  1. Doerge, R.W.;Churchill, G.A. (1996): Permutation tests for multiple loci affecting a quantitative character. Genetics 412: 285-294
  2. Lander, E.S.; Botstein, D. (1989): Mapping mendelian factors underlying quantitativetraits using RFLP linkage maps. Genetics 121: 185-199
  3. Lander, E.;Kruglyak, L. (1995): Genetic dissection of complex traits: guidelines for interpreting and reporting linkage results. Nature Genetics 11: 241-247
  4. Weller, J. I.; Song, J. Z.; Heyen, D. W.; Lewin, H. A.Ron, M. (1998): A new approachto the problem of multiple comparisons in the genetic dissection of complex traits.Genetics. 150:1699-706