Thus, the presence of microsatellites motifs in the W chromosomes of phylogenetic divergent groups led us to suppose that these sequences might have some role in the process of the sex chromosome differentiation. PLoS Biol. Figure 2.
Moreover, a similar model [e. The X chromosome spends less time in males, therefore it is expected to have a lower mutation rate than autosomes and Y chromosome. Biol J Linn Soc — Effective population size and the faster-X effect: empirical results and their interpretation.
Reich for helpful discussions; P. Bayesian Markov chain Monte Carlo sequence analysis reveals varying neutral substitution patterns in mammalian evolution.
PDF 51 kb. Second, what is the temporal dynamics of such differences accompanied by the stepwise recombination loss between avian sex chromosomes? One of the foundational results in molecular evolution is that the rate at which neutral substitutions accumulate on a lineage equals the rate at which mutations arise.
J Theor Biol.
Cagnotti Castelar, Argentina for cultures of T. External link. Figure 1 B,F. Thus, the autosomal location of Pix in D. Diamond, confirmed fusion; circle, translocation or incomplete degeneration of one marker; square, putative fusion suggested by cytogenetic data.