Find More Ancestors with Autosomal DNA by Increasing Coverage
When using DNA test results to find evidence for a research subject’s parent, the typical method is to find DNA matches who are descendants of the hypothesized parent. You will only be able to find these matches if you actually inherited DNA from that ancestor. The more distant the ancestor, the less likely that you inherited very much DNA from that person. You are expected to inherit about: 1/4 of a grandparent’s DNA (25%) 1/8 of a great-grandparent’s DNA (12.5%) 1/16 of a 2nd-great-grandparent’s DNA (6.25%) 1/32 of a 3rd-great grandparent’s DNA (3.125%) 1/64 of a 4th-great-grandparent’s DNA (1.5626%) 1/128...
