DNA sequences that are close together on a chromosome tend to be inherited together. Because of this, we can use genetic variation surrounding a specific variant (i.e. "linked" to it) to infer the presence or absence of a variant that is linked to a health condition or trait. Linkage tests are not as predictive of your dog's true genotype as direct assays, that we use on most other genetic conditions we test for.
What is a Linkage Test?
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