Brachygnathia inferior - is it heritable?

Authors: Moller K, James JP
Publication: New Zealand Veterinary Journal, Volume 23, Issue 8, pp 175-179, Aug 1975
Publisher: Taylor and Francis

Animal type: Cattle, Livestock, Production animal, Ruminant
Subject Terms: Alimentary system/gastroenterology, Skeletal/bone/cartilage, Genetics, Inherited disease/conditions, Oral/teeth
Article class: Scientific Article

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Abstract: Brachygnathia inferior is a condition where the incisor teeth meet the maxillary pad behind its anterior angle. It is often referred to as undershot jaw. In cattle it has been demonstrated under adverse grazing conditions to be economically important (Hancock, 1950). Donald and Wiener (1954), Koch (1955), Grant (1956) and Wiener and Gardner (1970) all considered brachygnathia a heritable coadition, but did not agree on the mode of inheritance. Donald and Wiener (1954) thus concluded that its inheritance is not always of simple Mendelian type. Grant ( 1956) suggested that under-developed mandible is due to a recessive gene. Smith et al (1961) suggested that the mode of inheritance in the Guernsey breed is relatively simple, but is more than recessive…

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