He sweeps left, up past the castle and onto the climb to Confederacion for the penultimate time.
This rapidly blocks the channel, which then sweeps left and right to evade the obstacle.
This rapidly blocks the channel, which then sweeps left and right to obviate the obstacle.
As a result, soft sweeps leave more subtle signatures in population genomic data than hard sweeps and are thus more difficult to detect.
Presumably, these are genomic regions that have been under strong and relatively recent positive selection, and the selective sweeps left a strong signature in these regions, encompassing several genes.
Most of these genes are outliers for different tests and/or different populations, and have already been described in previous scans for positive selection, providing strong support to the hypothesis that recent selective sweeps left a signature in these regions.
Hard selective sweeps leave characteristic signatures in population genomic data, such as a reduction in genetic diversity around the adaptive site (Maynard Smith and Haigh 1974; Kaplan et al. 1989; Kim and Stephan 2002) and the presence of a single, long haplotype (Hudson et al. 1994; Sabeti et al. 2002; Voight et al. 2006).
However, most of these genes are outliers for different tests and/or different populations (CHB, CHS, JPT), and have been described in previous scans for positive selection, providing strong support to the hypothesis that recent selective sweeps left a signature in these regions.
He was 80 and he had put a ladder up to go sweep leaves out of the gutters.
I hated the cocktail hour, and, whenever I could, I escaped to beat rugs and sweep leaves on the hotel roof.
