The CXB set of RI strains is used in the genetic analysis of numerous complex or potentially complex physiologic phenotypes including differences in thyroid function (Graves? disease) and pulmonary inflammation as well as behavioral phenotypes including avoidance, exploration and locomotor activity. The CXB set is derived from the BALBc/ByJ (Stock No. 001026) and C57BL/6ByJ (Stock No. 001139) progenitor strains.Read More +
The CXB set of RI strains is used in the genetic analysis of numerous complex or potentially complex physiologic phenotypes including differences in thyroid function (Graves? disease) and pulmonary inflammation as well as behavioral phenotypes including avoidance, exploration and locomotor activity.
The CXB set is so small that markers on different chromosomes occasionally have almost precisely the same SDP. This produces high non-syntenic association and false linkage between variance in phenotypes and genotypes. Please examine the correlation coefficients of markers close to interest loci with ALL other markers to evaluate the risk of non-syntenic association.
The strain distribution pattern (SDP) for the CXB RI strains is available through the Mouse Genome Informatics
Contributed Data Sets and Gene Network.
Additional tools and information are presented through the Mouse Phenome Database
Specialized Strain Panel Query Form, and
The original 11 CXB recombinant inbred (RI) lines were generated at the National Institutes of Health by Dr. Donald Bailey (labcode By) starting in 1959. After moving to The Jackson Laboratory in 1967, an additional set of 6 strains was created with the help of Jo Hilgers (Labcode Hi). The CXB set is derived from the BALBc/ByJ (Stock No. 001026) and C57BL/6ByJ (Stock No. 001139) progenitor strains. CXB1 through CXB7 originally were designated using letters. Several of the original strains are extinct. The Jackson Laboratory currently distributes 7 of the original By strains and 6 of the Hi strains.
|Allele Name||retinal degeneration 8|
|Allele Synonym(s)||nmf144; Rd8-|
|Gene Symbol and Name||Crb1, crumbs family member 1, photoreceptor morphogenesis associated|
|Strain of Origin||C57BL/6By or C57BL/6N|
|Molecular Note||The mutation in the rd8 mouse has been identified as a single base deletion at nt3481 in the gene. This deletion causes a frame shift and a premature stop codon that truncates the transmembrane and cytoplasmic domain of the protein after amino acid 1207. This mutation has been found to be present in all sublines of C57BL/6N and in C57BL/6ByJ, but not in any C57BL/6J subline. It occurred sometime between transfer of mice from JAX to NIH, in 1951, and from NIH to Donald Bailey, in 1961.|
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