Is it possible to build my tree based on this information?
One day perhaps it will be possible to actually build a missing part of the tree only from DNA information, already today we can puzzle togheter some individs with the help of how close they are related, but we have a lottery effect that we have to go around, understand more about, two whole sibblings can be more distant related by DNA to eachother then with a stranger. Straight line on mothers and fathers line is probaly more reliable to find, then others. Likely, there will be a lot of missing people between two related, say they share a common ancestor in 1600, on one side thay can track the fathers line to 1700, on the other to 1800, one will have at least 3 missning generations, the other one at least 6 dito. They could in Geni be conneted via N.N. profiles, if allowed, 100% real, but also a guess when it comes to how many they actually exactly were.