The lineages allow breeders to give a name to their work. So they retain all glory even if bunnies are sold.
Just reproduce two bunnies from the same lineage to get babies of this lineage.
If a bunny from a lineage reproduce with another that is not of the same lineage, babies will not have any lineage and there potentials will have a significant penalty.
|Weasley||Lop-eared||Potential: 1024.42 (99,07%)||Population: 842 bunnies||Started october 2021|
|Malefoy||Angora||Potential: 1001.83 (97,55%)||Population: 563 bunnies||Started december 2021|
|Potter||Original||Potential: 997.55 (97,44%)||Population: 425 bunnies||Started february 2022|
|Lovegood||Panda||Potential: 991.44 (97,08%)||Population: 497 bunnies||Started december 2021|
|Hagrid||Dwarf||Potential: 991.1 (96,98%)||Population: 375 bunnies||Started february 2022|