Article
Missing upper beak: a new lethal mutation in domestic fowl.
The Journal of heredity - 1 Jan 2000
Silversides F G, Urrutia M S, Crawford R D
Abstract excerpt
A new condition affecting the facial structure of domestic fowl is described. It is controlled by an autosomal recessive gene having complete penetrance. The mutation has been named missing upper beak and the gene symbol mub is proposed. The condition is an obligate lethal. Mortality occurs on the twelfth day of incubation or during the hatching process. One chick hatched unaided and five were assisted from the...
Topics
- Animals
- Beak
- Chickens
- Genes, Lethal
- Mutation