Genome Evolution in Outcrossing vs. Selfing vs. Asexual Species

Sylvain Glémin , Clémentine M. François , Nicolas Galtier (1)

1 UMR ISEM - Institut des Sciences de l'Evolution de Montpellier

A major current molecular evolution challenge is to link comparative genomic patterns to species' biology and ecology. Breeding systems are pivotal because they affect many population genetic processes and thus genome evolution. We review theoretical predictions and empirical evidence about molecular evolutionary processes under three distinct breeding systems-outcrossing, selfing, and asexuality. Breeding systems may have a profound impact on genome evolution, including molecular evolutionary rates, base composition, genomic conflict, and possibly genome size. We present and discuss the similarities and differences between the effects of selfing and clonality. In reverse, comparative and population genomic data and approaches help revisiting old questions on the long-term evolution of breeding systems.

Mots clés: Breeding systems; GC-biased gene conversion; Genome evolution; Genomic conflicts; Selection; Transposable elements

Domaines: Génomique, Transcriptomique et Protéomique [q-bio.GN]; Evolution [q-bio.PE]; Génétique des populations [q-bio.PE]

Sylvain Glémin, Clémentine M. François, Nicolas Galtier. Genome Evolution in Outcrossing vs. Selfing vs. Asexual Species. Evolutionary Genomics - Statistical and Computational Methods Second Edition, 2019, ⟨10.1007/978-1-4939-9074-0_11⟩. ⟨hal-02370678⟩