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Interpreting match -- can brothers be off by one number on one marker?

Replies: 4

Re: Interpreting match -- can brothers be off by one number on one marker?

Posted: 1363283678000
Classification: Query
Mutations have to happen sometime, and when they do, brothers will be different. Very occasionally, brothers will even differ on more than one marker.

The best way to validate the relationship is with an autosomal test. Half-brothers share about 25% of their DNA on the average. 23andMe would be a good choice for this test, since you can see exactly where the brothers match.
SubjectAuthorDate Posted
chitcat 1363279243000 
APTurner 1363283678000 
chitcat 1363285791000 
Shari S. 1363287260000 
APTurner 1363297120000 
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