Omicron Arietis [SEP] constellation
Omicron Arietis
Omicron Arietis, Latinized from ο Arietis, is the Bayer designation for a single, blue-white hued star in the northern constellation of Aries. It has an apparent visual magnitude of +5.78, which means it is dimly visible to the naked eye. Based upon an annual parallax shift of 5.49 mas as seen from Earth, it is located roughly 590 light years from the Sun. At that distance, the visual magnitude of the star is diminished by an extinction factor of 0.22 due to interstellar dust
considerably to account for other factors, such as the effect of slightly deleterious mutations.
The other methods for detecting adaptive evolution use genome wide approaches, often to look for evidence of selective sweeps. Evidence of complete selective sweeps is shown by a decrease in genetic diversity, and can be inferred from comparing the patterns of the Site Frequency Spectrum (SFS, i.e. the allele frequency distribution) obtained with the SFS expected under a neutral model (Willamson et al. 2007). Partial selective sweeps provide evidence of the most recent