Since the advent of DNA profiling of grape varieties in 1993, ampelography (ámpelos = vine and  lógos = study) has been rewriting wine books by correctly identifying grape origins and rejecting synonyms.

the-wine-guys-fun-factFor example, Zinfandel was long suspected to be identical to Primitivo, however after DNA analysis it was established that the grape was native to Croatia where it is called Crljenak Kastelanski. DNA testing has also revealed several unexpected parentages, the most surprising being Cabernet Sauvignon which was shown to be a crossing between Cabernet Franc and Sauvignon Blanc.

Cabernet Sauvignon Is The Cross Between What Two Grapes?
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