Reduced recombination patterns in Robertsonian hybrids between chromosomal races of the house mouse: chiasma analyses.

ABSTRACT: The recombination suppression models of chromosomal speciation posit that chromosomal rearrangements act as partial barriers to gene flow allowing these regions to accumulate genetic incompatibilities, thus contributing to the divergence of populations. Empirical and theoretical studies exploring the requirements of these models have mostly focused on the role of inversions. Here, the recombination landscape of heterozygosity for Robertsonian (Rb) fusions is investigated in the house mouse. Laboratory-bred F1 males and females between highly differentiated races from Tunisia (Rb: 2n=22, Standard, St: 2n=40) were produced in which all Rb fusions are present as trivalents in meiosis. Recombination patterns were determined by the analysis of chiasmata and compared with previous data on the Tu

SUBMITTER: Dumas D 

PROVIDER: S-EPMC4815594 | biostudies-literature | 2015 Jan

REPOSITORIES: biostudies-literature