COLOUR GENETICS

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COLOUR GENETICS FOR SHETLANDS
By Linda Wendelboe

Click on the button for a Glossary of Genetic Terms   GLOSSARY

Adalsteinsson (see below) did the early work in figuring out Northern European Short Tail Sheep colour genetics.  His work is used as a basis for Shetland as well as Icelandic and other breed colour genetics. At each gene, a sheep will have two alleles; one inherited from its mother and one inherited from its father.  Its genotype is made up of all of these pairs of alleles.

B Gene, Brown or Black:  The B gene controls whether the sheep will be black toned (black or grey in phenotype)