On another website someone asked questions about their DNA makeup but did not get an answer. The questions caught my attention so I thought I would ask.

This person and both his parents submitted samples and got back their results. He points out that while all three are complementary he shows an almost 3% of South Asian DNA but South Asian DNA does not show up in either parent. Is this possible without a third party being somehow involved?

He also shows a higher percentage of DNA (7.5%) from a different area than either of his parents has. His dad has 0% and his mom 2.7% from the same area. I assume this could happen because the results are calculated from the percentages in the individual and are not cumulative from parental results?

Anyone have more insights into this or websites that I could find additional information?