Genetics

I have been researching my family tree for years but only just recently joined Ancestry.com. I sent in saliva for a DNA test and my results were surprising. I'm mostly Irish & Scandinavian. Now, since my biological dad was adopted I had very little info in his side of the family when I had genetic testing done because of my cancer. The other night my mom mentioned what his last name had been. Bingo! Now I have some info on that side of the family. So now the DNA matches I have make sense. I even found a death certificate for an aunt (?) who died of...duh duh duh duh...metastatic breast cancer. Interesting...