GIGO
You're basically saying that every Ancestry/23andMe-type DNA analysis based on the product of PCR amplification is so full of errors introduced by the PCR process itself as to be useless. It's worth noting that the study which you cited by Zhou, Zhang and Ebright is from 1991, and focusses on a specific polymerase. The science of DNA-wrangling has moved on a LONG way since 1991.
Biting the hand that feeds IT
