Genetics Picture

English Chinese Spain French Italian Dutch Norwegian Swedish Portuguese Taiwanese


The Manx is the well-known tailless cat, said to originate from the Isle of Man in Great Britain. The breed is relatively old, but also controversial, since some defects may follow the Manx gene. The gene is incomplete dominant and lethal in its homozygotic form. In heterozygotic form it might, apart from giving a very short tail or taillessness, give more or less shortened vertebrae, anomalies in the pelvic region with problems in movement as consequence, neurological problems and distorted intestines. There are however different opinions on how severe these problems are. The gene is denominated M.