Chromosom Res. Reciprocally, a physically large inversion in a species with a large PAR region may not benefit from a high recombination rate between the SA locus and the SDR even though they are physically much farther apart. Maximum likelihood trees of mitochondrial COII left and nuclear ITS2 right sequences of Glyptotermes nakajimai individuals representing each of the collection sites.
In many animals, sex determination involves the entire genome. J Embryol Exp Morphol 51— Cytogenetic and Genome Research. Many biologists are habituated to thinking about sex determination through the familiar examples of mammals and D. Schaefer H, Renner SS A three-genome phylogeny of Momordica Cucurbitaceae suggests seven returns from dioecy to monoecy and recent long-distance dispersal to Asia.
Leave a Reply Cancel reply. In species with genotypic sex determination, the chromosome pair that determines sex can change rapidly over time.
An average of ca. Possible differences in the two Z chromosomes in male chickens and evolution of MHM sequences in Galliformes. We focus on male heterogametic species throughout this manuscript; however, this same process, and the theory developed below, applies to female heterogametic taxa as well as male heterogametic taxa.
Mol Cell Endocrinol.
Results and discussion Glyptotermes nakajimai contains multiple asexual populations To confirm the presence of asexual populations of G. Ronquist F, Huelsenbeck JP. It is now possible to compare these findings with what is already known about this process in other systems to determine whether we can use mechanisms from other systems to further our understanding of meiotic processes in birds.
In the case of a recessive male-beneficial allele, X chromosome inversions are unable to resolve sexual antagonism.