X chromosome transmission ratio distortion in CF mice
Author Information
Author(s): Haston Christina K, Humes Daryl G, Lafleur Melanie
Primary Institution: McGill University
Hypothesis
Does the X chromosome locus influence the survival of CF mice to weaning?
Conclusion
The study confirmed two loci of transmission ratio distortion in female CF mice, implicating the X chromosome in survival to weaning.
Supporting Evidence
- An excess of homozygous BALB genotypes was detected on chromosomes 5 and X.
- Significant pre-weaning lethality of CF mice occurred with 11.3% identified as CF.
- X chromosome genotypes were not distorted in female CF mice.
Takeaway
The researchers studied mice with cystic fibrosis and found that certain genetic traits on the X chromosome affect their chances of surviving to a certain age.
Methodology
Genotyping of 1208 three-week old F2 mice and 186 day E15.5 embryos for specific loci on chromosomes 3, 5, and X.
Potential Biases
Potential bias in the breeding strategy affecting the inheritance patterns observed.
Limitations
The study may not account for all genetic factors influencing survival, and the sample was limited to specific mouse strains.
Participant Demographics
Mice from C57BL/6J and BALB/cJ strains.
Statistical Information
P-Value
3.0 × 10-35
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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