Interference length reveals regularity of crossover placement across species

Marcel Ernst (), Raphael Mercier and David Zwicker ()
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Marcel Ernst: Max Planck Institute for Dynamics and Self-Organization
Raphael Mercier: Max Planck Institute for Plant Breeding Research
David Zwicker: Max Planck Institute for Dynamics and Self-Organization

Nature Communications, 2024, vol. 15, issue 1, 1-9

Abstract: Abstract Crossover interference is a phenomenon that affects the number and positioning of crossovers in meiosis and thus affects genetic diversity and chromosome segregation. Yet, the underlying mechanism is not fully understood, partly because quantification is difficult. To overcome this challenge, we introduce the interference length Lint that quantifies changes in crossover patterning due to interference. We show that it faithfully captures known aspects of crossover interference and provides superior statistical power over previous measures such as the interference distance and the gamma shape parameter. We apply our analysis to empirical data and unveil a similar behavior of Lint across species, which hints at a common mechanism. A recently proposed coarsening model generally captures these aspects, providing a unified view of crossover interference. Consequently, Lint facilitates model refinements and general comparisons between alternative models of crossover interference.

Date: 2024
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DOI: 10.1038/s41467-024-53054-2

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