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In general, most of the cultures of kveik that have been analyzed contain more than one strain of ''S. cerevisiae'', which was the only species in all of the kveik cultures analyzed by Escarpment Laboratories except for the Muri kveik. The Muri kveik contains a single isolate of what appears to be a domestic (human produced) hybrid between ''S. cerevisiae'', ''S. eubayanus'', and ''S. uvarum''. Genetically, kveik yeast form their own group of closely related domesticated ale strains that do not closely match the "Beer 1" and "Beer 2" yeasts from the [http://www.cell.com/cell/fulltext/S0092-8674(16)31071-6 Gillons/White Labs (2016)] study that sequenced previously known ale strains (see [http://www.garshol.priv.no/blog/374.html "A family tree for brewer's yeast" by Lars Marius Garshol]). The closest related domesticated strains were WY1318 London Ale III™, WY2565 Kölsch™, and WY1007 German Ale™ <ref name="Tyrawa_2017" />.
The kveik strains themselves can be divided into two major closely related genetic groups, with the Muri and Lithuanian strains falling outside of these two groups completely, which arguably categorizes them to not actually be considered "kveik". The two major genetic kveik groups are: Granvin, Stranda, Laerdal and Voss, which all come from the southern region of Norway except the Stranda kveik, and Sykkylven, Hornindal, and Stordal, which all come from the northern region of Norway (the north and south regions are divided by the Jostedal glacier, which created both a geographical and cultural divide in Norway historically). The Laerdal and Stordal kveik strains fall inside of the kveik family, but are genetic outliers <ref name="Tyrawa_2017" />.
===Sigmund Gjernes's Voss Kveik===