mortality/aging
• mutant embryos are present up to 10.5 dpc in a near Mendelian ratio, but live embryos older than 11.5 dpc are not observed
• Background Sensitivity: in pure 129P2/OlaHsd backgrounds, mutant embryos are detectable up to 15.5 dpc
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embryo
• abnormalities are seen in mutant embryos beginning at 10.5 dpc, when apoptotic cells are detectable in the embryo proper
• by 10.5 dpc, mutant embryos show growth retardation and a wide range of developmental dysmorphology, and considerable apoptotic cell death in the embryo proper compared to controls
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cellular
• in cells derived from 11.5 dpc mutant embryos, chromosome and chromatid breaks as well as an increased frequency of translocations are seen in 14% of the cells, compared to 0.7% in controls
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