Genetics Picture

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American Curl

The breed American Curl is founded on a gene which gives a defect on the external ear, the ear is bent backwards. The effect of the ears is developed when the kitten is between twelve and sixteen weeks old. The first cat of this kind first appeared in 1981 in California. The gene, denominated Cu, is dominant. It seems like this gene is of no harm to the cat, whether it is in heterozygotic or in homozygotic form.