A classical family tree represents the descendants of a person or another living being as well as the plants such as the vine and is part of genealogy (ancestry research). To represent the descent of "all" grapevines or even only a few in this form is impossible and fails for several reasons. The graduate biologist Andreas Jung remarks the following: There are many individual parent-offspring relationships, but no real pedigrees, since often only the mother is clear and the father is missing, as in the case of the numerous seedlings of Gouais Blanc (White Heunisch). Each seed (kernel) in a berry is, in principle, a potential new grape variety, but it only becomes one when the kernel enters the soil, germinates there and grows into a vine. Within a berry with 5 to 6 seeds, the fathers can therefore be 5 to 6 varieties, depending on what pollen has been blown in at the time of flowering or has been transferred to the vine itself.