Dear Mick,
You are on the right track.
Say you have 2 factors
Sireallele 50
Damallele 50
defined so that sire allele i is the same allele as dam allele i
then using Sireallele and(Damallele) in the model statement
adds the 50 columns of the design matrix for Damallele to the 50 columns
of the design matrix for Sireallele
Hence you get only one solution for each allele regardles of its
source.
Arthur
> From: Mick.Carrick@nre.vic.gov.au
> X-Lotus-FromDomain: NRE
> To: asreml@chiswick.anprod.csiro.au
> cc: gilmoua@apollo.agric.nsw.gov.au
> Date: Fri, 9 Jun 2000 12:13:50 +1000
> Subject: Combining desigh variables
> Mime-Version: 1.0
> Content-Disposition: inline
>
>
>
> Suppose we have a pair of alleles (or haplotypes) inherited from sire and dam
> respectively, and we wish to fit the allele value as a level of a factor
whether
> it comes from sire or dam. So allele 'A' is fitted as a single level 'A' in
the
> model no matter where 'A' comes from. Do we use the and() command to make two
> factors into one? How would it be specified? Or am I missing something obvious
> (more probably). This must arise in analysis of diallel cross data so I
imagine
> there is a way to do it.
>
> Thanks in advance
>
> mick carrick
>
>
<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
Arthur Gilmour PhD mailto:Arthur.Gilmour@agric.nsw.gov.au
Principal Research Scientist (Biometrics) fax: <61> 2 6391 3899
NSW Agriculture <61> 2 6391 3922
Orange Agricultural Institute telephone work: <61> 2 6391 3815
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