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First arch malformation: a new craniofacial mutant in the mouse
The Journal of Heredity
|September 1, 1980
Summary
A newly identified gene, far, causes severe first branchial arch malformations in mice. This autosomal recessive mutation leads to extensive craniofacial bone defects and early lethality in affected newborns.
Area of Science:
- Developmental biology
- Genetics
- Craniofacial development
Background:
- First branchial arch (FBA) development is crucial for craniofacial structures.
- Genetic mutations can lead to severe developmental abnormalities.
Purpose of the Study:
- To characterize a novel mouse model with first arch malformation.
- To determine the inheritance pattern of this malformation.
Main Methods:
- Phenotypic analysis of affected BALB/c mice.
- Genetic analysis to determine inheritance pattern.
Main Results:
- A single autosomal recessive gene, provisionally named 'far', is responsible.
- Affected newborns exhibit extensive bony defects of the face and skull.
- Abnormalities primarily affect FBA-derived bones, including a cleft secondary palate.
- Mutant mice die within 24 hours of birth.
Conclusions:
- The 'far' gene plays a critical role in first branchial arch development.
- This mouse model provides a valuable tool for studying craniofacial development and related disorders.