Centromere drive may propel the evolution of chromosome and genome size in plants.

ABSTRACT:

Background

Genome size is influenced by natural selection and genetic drift acting on variations from polyploidy and repetitive DNA sequences. We hypothesized that centromere drive, where centromeres compete for inclusion in the functional gamete during meiosis, may also affect genome and chromosome size. This competition occurs in asymmetric meiosis, where only one of the four meiotic products becomes a gamete. If centromere drive influences chromosome size evolution, it may also impact post-polyploid diploidization, where a polyploid genome is restructured to function more like a diploid through chromosomal rearrangements, including fusions. We tested if plant lineages with asymmetric meiosis exhibit faster chromosome size evolution compared to those with only symmetric meiosis,

SUBMITTER: Plackova K 

PROVIDER: S-EPMC11687628 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature