ERC Consolidator Grant · 2020
Meiotic crossing-over: from spatial distribution to in situ chromosomal architecture
To haploidise their genome, sexually reproducing organisms employ a specialised cell division program – meiosis – which consists of one round of DNA replication followed by two consecutive rounds of chromosome segregation: meiosis I and II. While meiosis II resembles mitosis, the ability of cells to segregate homologous chromosomes entails several specialised events. In most organisms, physical linkage and subsequent disjunction of maternal and paternal chromosomes require homologous recombination and crossing-over. As observed over a century ago, crossovers occur at different chromosomal positions in different meiotic nuclei – however, the incidence of a crossover in a given location…
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