You can use your 19a value from Ancestry in 19/394 (it is DYS value 19, but sometimes referred to as 394). I would leave dashes as dashes and not change them to nulls. I assume you are probably referring to GATA H4 for the "subtract 11"? That is actually not correct anymore (probably an old conversion chart). You should subtract one from your Ancestry value (so it will be 11 for you).
Italians have not invented coffee, yet the passion they have for it makes the rest of world believe they discovered it. Around the end of the sixteen century, it was Venice where coffee was first introduced. Thanks to its trade relationship with the Eastern countries. Initially, coffee was considere...