M-J-G
Member
I believe the gene is the Inverdale gene. Aberdale is the sheep, bred in Aberystwyth, incorporating the Inverdale gene.
The origional sheep were called Inverdale
I used to bale the silage for the innovis farm in Edinburgh and I gave a hand during lambing back at that time (2006 ish) when the first rams were put out to farms for trial and they were all referred to as Inverdale.