1. Y and Mitochondrial Chromosomes in the Heterogeneous Stock Rat Population.
- Author
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Okamoto F, Chitre AS, Sanches TM, Chen D, Munro D, Aron AT, Beeson A, Bimschleger HV, Eid M, Martinez AGG, Han W, Holl K, Jackson T, Johnson BB, King CP, Kuhn BN, Lamparelli AC, Netzley AH, Nguyen KH, Peng BF, Tripi JA, Wang T, Ziegler KS, Adams DJ, Baud A, Carrette LLG, Chen H, de Guglielmo G, Dorrestein P, George O, Ishiwari K, Jablonski MM, Jhou TC, Kallupi M, Knight R, Meyer PJ, Woods LCS, Polesskaya O, and Palmer AA
- Abstract
Genome-wide association studies typically evaluate the autosomes and sometimes the X Chromosome, but seldom consider the Y or mitochondrial Chromosomes. We genotyped the Y and mitochondrial Chromosomes in heterogeneous stock rats (Rattus norvegicus), an outbred population created from eight inbred strains. We identified 8 distinct Y and 4 distinct mitochondrial Chromosomes among the 8 founders. However, only two types of each nonrecombinant chromosome were observed in our modern heterogeneous stock rat population (generations 81-97). Despite the relatively large sample size, there were virtually no significant associations for behavioral, physiological, metabolome, or microbiome traits after correcting for multiple comparisons. However, both Y and mitochondrial Chromosomes were strongly associated with expression of a few genes located on those chromosomes, which provided a positive control. Our results suggest that within modern heterogeneous stock rats there are no Y and mitochondrial Chromosomes differences that strongly influence behavioral or physiological traits. These results do not address other ancestral Y and mitochondrial Chromosomes that do not appear in modern heterogeneous stock rats, nor do they address effects that may exist in other rat populations, or in other species., (© The Author(s) 2024. Published by Oxford University Press on behalf of The Genetics Society of America.)
- Published
- 2024
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