B6129F1 Hybrid Mouse Model

  • Model #
  • Genotype
  • Nomenclature
  • B6129-F
  • B6129-M
  • Used primarily as a control for studies involving the use of targeted mutation mice on a mixed background originating from 129 ES cell based chimeras that were subsequently mated to C57BL/6 mice
  • Not genetically identical to these mixed background targeted mutation models, instead they approximate, in a consistent manner, the genetic mix that may be present in such models.


The B6129F1 hybrid model is developed by intercrossing C57BL/6NTac female mice to 129S6/SvEvTac male mice from Taconic US's commercial colonies.


For genetic comparisons and pertinent data, refer to "Genetics" for the parent strains of this hybrid. The B6129F1 will be heterozygous at the loci where the C57BL/6 and the 129/SvEv differ, and homozygous at the loci where they are the same.


White-Bellied Agouti



n= 120 per sex at MPF health standard from US colonies. Data collected 2011-14.
High and Low represent mean +/- 1 standard deviation.
Based on sample size the charts above represents ~70% of the population.
All growth curves represent animals housed in our barriers, at our standard density and fed NIH31-M diet. Variations at customer facilities will alter expected growth curves.
Growth charts are provided only as a guide.

Customize this chart by clicking the legend elements, then explore download options by hovering your cursor over the down arrow to the right of the chart title.
Average litter size: 6