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09203016

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[求助] 基因型效应计算

我投了一篇SNP与性状关联的文章,编辑要求按照下列计算方法
计算基因型加性效应与显性效应平均值及标准误:
加性效应:additive   effect,   a =(AA- GG)/2;
显性效应:dominance effect, d = AG - [(AA + GG)/2];
Standard  errors  of  the  additiveand dominance effects were constructed from the variance–covariance  matrix  of  the  predicted  genotype  classes,  as
were the SED for pairwise contrasts of the SNP genotype
classes.
计算公式我会,问题是看不懂标准误到底是怎么计算的。求讲解!
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