Genetic conflict and sex chromosome evolution games in Stretford

There is no large X-effect for interspecific differences in other male sexual phenotypes, such as genital morphology [ 7379 ], indicating that a greater efficacy of selection in the hemizygous sex cannot be a general explanation for the large X-effect on hybrid sterility [ 55 ].

My research interests are in reconstructing ice sheets and their dynamics from geological and geophysical evidence in both marine and terrestrial environments. Kamath RS, et al. Large Z-effect analagous to the large X-effect, the hypothesis that hybrid female sterility loci should be enriched on the Z chromosome.

The effect of aggregative overwintering on an insect genetic conflict and sex chromosome evolution games in Stretford transmitted parasite system. Similarly, sex chromosomes favor biased sex ratios, as an X chromosome is always transmitted from father to daughter, and a Y chromosome from father to son.

Evolutionary lability of context-dependent codon bias in bacteria Journal article McVean, G.

genetic conflict and sex chromosome evolution games in Stretford

Wolbachia that cause cytoplasmic incompatibility are easily invaded by sex ratio-distorting mutants. Ultimately, understanding the full significance of selfish genetic elements for genome evolution will require identifying the mechanisms underlying their selfish behavior, the ways in which genomes have responded to their presence, and the evolutionary divergence of the factions in these conflicts.

Hamilton WD. Differential accumulation of hybrid male sterility effects on the X and autosomes. Male-killing bacteria trigger a cycle of increasing male fatigue and female promiscuity Journal article Charlat, S. Comparative genomics reveals a constant rate of origination and convergent acquisition of functional retrogenes in Drosophila.

Genetic conflict and sex chromosome evolution games in Stretford что могу

Trends Genet — Similarities and differences in the nuclear genome organization within Pooideae species revealed by comparative genomic in situ hybridization GISH. More generally, selection on the sex ratio can trigger transitions between and among different ESD and GSD systems [3].

Furthermore, transitions through gynodioecy, pathways 2 and 3 e.

Thermal sensitivity of the Spiroplasma-Drosophila hydei protective symbiosis: The best of climes, the worst of climes Journal article Corbin, C. The dynamics of parasite incidence across host species Journal article Engelstadter, J. Selfish genetic elements and speciation.

Genetic conflict and sex chromosome evolution games in Stretford

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  • Apr 01,  · Genetic conflict over sex chromosome transmission might also contribute to two well-known patterns of reproductive isolation: the large contribution of the sex chromosomes to hybrid sterility (the large X-effect), and Haldane's rule. J.B.S. Haldane observed that in interspecific crosses, unisexual inviability or sterility predominantly affects Cited by: esis as the genetic conflict theory of sex chromosome evolution (Figure 2). Much of the evidence we present consists of detailed molecular and genetic studies of game-togenesis in pure species and interspecific hybrids, which by necessity are restricted to a few intensively studied model organisms. Although the data are taxonomically.
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  • Chromosomal sex determination systems create the opportunity for the evolution of selfish genetic elements that increase the transmission of. Rapid molecular evolution of Spiroplasma symbionts of Drosophila (Journal article). Gerth, M. Strong hybrid male incompatibilities impede the spread of a selfish chromosome between populations of a fly. In The Genetics and Biology of Sexual Conflict. ALTERING SEX-RATIOS - THE GAMES MICROBES PLAY.
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  • Chromosomal sex determination systems create the opportunity for the evolution of selfish genetic elements that increase the transmission of one sex chromosome at the expense of its homolog. Because such selfish elements on sex chromosomes can reduce fertility and distort the sex ratio of progeny, unlinked suppressors are expected to evolve, bringing different regions of the genome into Cited by: genetic conflict over sex chromosome transmission is an important evolutionary force that has shaped a wide range of seemingly disparate phenomena including the epigenetic regulation of genes expressed in the germline, the distribution of genes in the genome, and the evolution of hybrid sterility between species. Selfish genes and genetic conflictCited by:
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