Carolina The relative difference in 2C DNA content between male and female nuclei proved to be almost identical in both races 9. Sexual selection decreases N E Y Fig. The origin and evolution of the variability in a Y-specific satellite-DNA of Rumex acetosa and its relatives. J Pest Sci. With all such information, at this moment we will be highlighting the points that differentiate the autosomes and sex chromosomes, also known as allosomes.
In autosomes the centromere position is identical.
Different conflict strengths and foci offer potential explanations for lineage-specific variation in sex chromosome evolution, as conflict can affect both rates of sex chromosome turnover and sex chromosome divergence. Molecular cytogenetics in hop Humulus lupulus L.
The evolution of genome structure by natural and sexual selection. Chromosomal gene movements reflect the recent origin and biology of therian sex chromosomes. Jim Gardner. The selected genes were orthologous to markers for all the chromosomes of the ancestral karyotype represented by the B.
Texas N. For SGEs on sex chromosomes that cause sex ratio distortion, this arms race is particularly acute owing to selection to rebalance sex ratios. We also identify the centromere ends of guppy chromosomes, which were not determined in the genome assembly.
The evolution of reproductive systems and sex-determining mechanisms within Rumex Polygonaceae inferred from nuclear and chloroplastidial sequence data. Sex chromosome meiotic drive. Any SGEs that are already present on a sex chromosome or on a former autosome now involved in sex determination [e.
The inherent differences in sex-specific selection on the sex chromosomes themselves, and between the sex chromosomes and the autosomes, form the basis of a large and often compelling body of evolutionary theory that predicts the ways that intralocus sexual conflict will arise, play out, and in some cases potentially be resolved.