Domestic animals as models for biomedical research

Area of Science:

• Genetics
• Evolutionary Biology
• Animal Science

Background:

• Domestic animals possess a rich history of phenotypic selection, enriching for novel mutations.
• These mutations are valuable for understanding gene function and biological mechanisms.
• Characterizing genetic variants in domestic animals aids in phenotype evolution research.

Purpose of the Study:

• To review genetic dissections of approximately 50 genetic variants in domestic animals.
• To highlight mutations affecting pigmentation, behavior, metabolic regulation, and locomotion.
• To explore the role of non-coding mutations and structural changes in phenotypic diversity.

Main Methods:

• Review of genetic dissection studies on domestic animal variants.
• Analysis of mutations in approximately 30 genes.
• Documentation of structural variations like duplications, deletions, and inversions.

Main Results:

• Identified ~50 genetic variants impacting diverse phenotypes.
• Found mutations in ~30 genes, with novel associations reported for 10.
• Observed that nearly half of mutations occur in non-coding sequences.
• Confirmed significant contribution of structural changes to phenotypic diversity.
• Described five examples of allele evolution through accumulated mutations.

Conclusions:

• Genetic variants in domestic animals are key to understanding phenotype evolution.
• Non-coding mutations and structural variations play a substantial role in phenotypic diversity.
• Studying domestic animals provides critical insights into gene function and evolutionary processes.