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Genetic heterogeneity in the Indian Mus musculus
M Awasthi1, K V Bhat, R K Anand
1Experimental Animal Facility, National Institute of Immunology, New Delhi, India.
Biochemical Genetics
|October 29, 1998
Summary
Indian wild mice (M. musculus) exhibit extreme genetic variability and high heterogeneity, with novel alleles detected. Central populations show significant polymorphism, suggesting differentiation towards specific subspecies lineages.
Area of Science:
- Genetics
- Zoology
- Molecular Biology
Background:
- The genetic diversity of Indian wild mice (Mus musculus) has remained largely uncharacterized.
- Previous research has not extensively documented allozyme variations in natural Indian populations.
Purpose of the Study:
- To characterize the genetic diversity and population structure of Mus musculus across various Indian geographical locations.
- To provide the first comprehensive report on allozyme variations in Indian wild mouse populations.
Main Methods:
- Utilized 24 biochemical genetic markers to analyze allelic frequencies.
- Examined genetic diversity within and among 10 distinct wild mouse populations.
- Assessed population genetic structure and variation patterns.
Main Results:
- Detected extreme genetic variability within Indian Mus musculus populations.
- Identified the presence of novel alleles, contributing to enhanced genetic diversity.
- Observed a high level of genetic heterogeneity across the studied populations.
- Found that central populations exhibit high polymorphism and cannot be definitively assigned to a single subspecies.
Conclusions:
- Indian wild mouse populations display significant genetic diversity and heterogeneity.
- Allelic profiles suggest a pattern of gradual differentiation aligning with castaneus and batcrianus subspecies lineages.
- The findings provide crucial insights into the evolutionary genetics of Mus musculus in India.