International Journal of Molecular Ecology and Conservation, 2025, Vol.15, No.3, 134-143 http://ecoevopublisher.com/index.php/ijmec 141 variation and evolutionary conservation of regulatory sequences, and explain the mechanism of trait changes at the gene network level. 7.3 The combination of pan-genomics and conservation genomics The goat pan-genome is useful for breeding and also helps protect wild goat relatives. Many wild goats are endangered but still carry rare and useful genes (Bao et al., 2019). A pan-genome can identify genes that only exist in wild species. This information helps plan protection and careful breeding programs. Genes for disease resistance or environmental tolerance found in wild goats should be preserved. These genes can later be introduced into domestic goats if needed (Sasazaki et al., 2021). The pan-genome can also measure the natural transfer amount of genes between wild goats and domestic goats. This helps managers strike a balance between retaining purebred breeds and allowing for necessary adaptations. For very small populations, discovering their unique genetic variations can help zoos and breeding programs maintain diversity and prevent gene loss (Gong et al., 2023). 8 Concluding Remarks This research built a pan-genome of the goat genus and clearly showed the wide genetic diversity in goats and its part in evolution and adaptation. The core genome, shared by all goats, provides the basic genetic foundation and keeps the main life functions stable, staying highly conserved through long evolutionary time. The variable genome reflects how goats respond to different environments and human-driven selection. The structural changes and new genetic elements it contains help form the special traits seen in different goat breeds and their wild relatives. The gene deletion and sequence rearrangement that occurred during the domestication of domestic goats played an important role in the formation of domesticated traits. The unique genetic variations of different ecological types of goats provide genetic support for them to cope with extreme environments such as hypoxia, extreme heat and drought at high altitudes. Pan-genome analysis also enables us to reevaluate the genetic diversity of goats, discover a large number of variations not covered by traditional reference genomes, and thus provide a more complete list of genetic resources for goat breeding and conservation. Pan-genome comparisons with species such as pigs, cattle and sheep show that domestic animal domestication not only has common patterns at the genetic level (such as contraction of genetic diversity and conservation of core functional genes), but also exhibits species-specific evolutionary innovations. Looking forward, as sequencing technology and bioinformatics continue to improve, the pan-genome is likely to become the common approach in livestock genomics studies. For goats, building a larger and more accurate pan-genome, together with functional genomics and multi-omics integration, offers strong potential to uncover the genetic basis of complex traits and support breeding progress. At the same time, applying the pan-genome idea to conservation genomics will provide useful guidance for protecting goat genetic resources and preserving the genetic diversity of both species and breeds. Acknowledgments We sincerely appreciate the valuable opinions and suggestions provided by the three anonymous reviewers, whose meticulous review helped us improve the quality of this manuscript. Conflict of Interest Disclosure The authors affirm that this research was conducted without any commercial or financial relationships that could be construed as a potential conflict of interest. References Azam S., Sahu A., Pandey N.K., Neupane M., Van Tassell C.P., Rosen B.D., Gandham R., Rath S., and Majumdar S.S., 2025, Constructing a draft Indian cattle pangenome using short-read sequencing, Communications Biology, 8(1): 605. https://doi.org/10.1038/s42003-025-07978-0 Bao W., Lei C., and Wen W., 2019, Genomic insights into ruminant evolution: from past to future prospects, Zoological Research, 40(6): 476. https://doi.org/10.24272/j.issn.2095-8137.2019.061
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