Shaker short-tail, a spontaneous neurological mutant in the mouse

Abstract
A spontaneous mutation that occurred in the inbred strain BALB/cCF in 1980 proved to be inherited as a single autosomal recessive gene with complete penetrance. Homozygous recessive animals have a short or blunt tall, an irregular pattern of foliation of the cerebellum, delayed development of the righting reflex, and a wide variety of other peculiar behaviors. The effects of this mutation strongly resemble those of the shaker-short (st) gene reported by Dunn in 1934 that is now extinct. The gene designation, sst, is proposed for the new shaker short-tail mutation.

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