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Congenital contractural arachnodactyly , also known as fawn calf syndrome, is an autosomal recessive genetic disorder in cattle. The disorder affects the connective tissue of muscles, leading to contracture of the upper limb , and laxity of the joints of the lower limbs. CA affects Angus cattle, and associated breeds such as Murray Greys. The mutation which causes this defect is a deletion on bovine chromosome 21.
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