Sex-specific landscapes of crossover and non-crossover recombination in coppery titi monkeys ( Plecturocebus cupreus )
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ID: 321860
2026
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Abstract
Along with germline mutations, meiotic recombination plays a fundamental role in shaping genetic diversity and thus directly influences a species' potential adaptive response to environmental change, amongst other features. Despite the recombination landscape being of central importance for a variety of questions in molecular evolution, the genome-wide distribution and frequency of recombination remains to be elucidated in many non-human primate species. Utilizing novel high-coverage genomic data from three multi-sibling families, we here provide the first estimates of the rates and patterns of crossover and non-crossover recombination in coppery titi monkeys (Plecturocebus cupreus)-a socially monogamous, pair-bonded primate that serves as an important model in behavioral research. Consistent with haplorrhines, crossover and non-crossover recombination in this platyrrhine are frequently localized at PRDM9-mediated hotspots, characterized by a 15-mer binding motif with substantial similarities to the degenerate 13-mer motif found in humans. The sex-averaged crossover rate in coppery titi monkeys is comparable with those of other primates; however, no significant difference in recombination rates was observed between the sexes, despite a pronounced maternal age effect in the species. Similarities also exist with regards to the sex-specific genomic distribution of non-crossover events, though the minimal conversion tract lengths of extended events was observed to be considerably longer in maternally-inherited non-crossovers. Taken together, these similarities and differences in the recombination landscape relative to other primates highlight the importance of incorporating species-specific rates and patterns in evolutionary models, and the resources provided here will thus serve to aid future studies in this important primate model system.
| Reference Key |
openalex_W7170036957
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| Authors | Cyril J Versoza, Bales Kr, Jeffrey D. Jensen, Susanne P. Pfeifer |
| Journal | genome biology and evolution |
| Year | 2026 |
| DOI |
10.1093/gbe/evag186
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| URL | |
| Keywords | Keywords not found |
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