Vestibular Dysfunction in the Epistatic circler Mouse Is Caused by Phenotypic Interaction of One Recessive Gene and Three Modifier Genes

Table 1.

Distribution of the Different Genotypes at the ThreeEcl-loci in 91 Circling and 47 Noncircling Mice

No. of risk alleles Ecla (chrom 3) Eclb (chrom 4) Eclc (chrom 13) No. of circling mice (% animals) No. of noncircling mice (% animals)
6 AA BB CC 11 (12) 1 (2)
5 Aa BB CC 14 (15) 1 (2)
AA BB Cc 12 (13) 1 (2)
AA Bb CC 7 (7) 2 (4)
4 Aa Bb CC 11 (12) 2 (4)
Aa BB Cc 10 (10) 2 (4)
AA Bb Cc 4 (4) 0 (0)
AA BB cc 3 (3) 2 (4)
aa BB CC 3 (3) 1 (2)
AA bb CC 0 (0) 0 (0)
3 aa Bb CC 4 (4) 2 (4)
aa BB Cc 3 (3) 1 (2)
Aa Bb Cc 3 (3) 4 (8.5)
AA Bb cc 2 (2) 4 (8.5)
Aa BB cc 1 (1) 4 (8.5)
AA bb Cc 0 (0) 4 (8.5)
Aa bb Cc 0 (0) 0 (0)
2 AA bb cc 1 (1) 1 (2)
Aa Bb cc 1 (1) 0 (0)
aa BB cc 1 (1) 3 (6)
aa Bb Cc 0 (0) 4 (8.5)
Aa bb Cc 0 (0) 3 (6)
aa bb CC 0 (0) 1 (2)
1 Aa bb cc 0 (0) 3 (6)
aa Bb cc 0 (0) 1 (2)
aa bb Cc 0 (0) 0 (0)
0 aa bb cc 0 (0) 0 (0)
  • The noncircling mice represent a selected group that shows homozygosity for the recessive Ecs-gene. Upper cases represent risk-alleles derived from C57L/J and lower cases represent nonrisk alleles derived from SWR/J.

  • This is the single circling mouse that did not inherit a copy of the Eclb-risk allele for the neighboring marker. A recombination between the marker and the risk conferring mutation may have occurred in this animal.

This Article

  1. Genome Res. 12: 613-617

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