10.1534/genetics.116.192690

Summary

Ingested 2026-04-22. 1 findings extracted and verified.

Findings worth citing

Finding 1 — Across 112 mammalian species, the physical scale of the meiotic crossover distribution has shifted independently multiple times from one crossover per chromosome arm to one crossover per chromosome during mammalian evolution.

the physical scale of the genomic crossover distribution has undergone multiple independent shifts from one crossover per chromosome arm to one per chromosome during mammalian evolution. — p. 1

Why this is citable: This phylogenetic meta-analytic finding establishes that the chromosomal constraint on recombination is itself an evolvable trait, providing a novel mechanism for recombination rate variation that any comparative study of mammalian recombination must account for.

Counter / limitation: The supertree is informal (manually spliced, with polytomies for poorly resolved nodes), branch lengths are absent, and crossover data are overwhelmingly from males only (83.9%), limiting the power and precision of ancestral-state inference and phylogenetic comparative conclusions.

Topics: karyotype_evolution, chromosome_number_evolution, genome_structure_evolution