NCI Dictionary of Genetics Terms
A statistical estimate of whether two genetic loci are physically near enough to each other (or "linked") on a particular chromosome that they are likely to be inherited together. An LOD score of 3 or higher is generally understood to mean that two genes are located close to each other on the chromosome. In terms of significance, an LOD score of 3 means the odds are 1,000:1 that the two genes are linked and therefore inherited together. Also called logarithm of the odds score.