We have argued elsewhere that natural selection is not a cause of evolution, and that a resolution-of-forces (or vector addition) model does not provide us with a proper understanding of how natural selection combines with other evolutionary influences. These propositions have come in for criticism recently, and here we clarify and defend them. We do so within the broad framework of our own ‘hi...

In this paper, we aim to investigate the problem of estimating genetic correlation between two traits. Instead making assumptions about distribution effect sizes factors, propose use a high-dimensional linear model relate trait factors. To estimate correlation, develop generic strategy that combines sparse penalization methods and multiple sample splitting approaches. The final is determined by...

By combining optical tweezers with polarization microscopy, the hydrodynamic coupling between position and orientation fluctuations in a pair of colloidal spheres has been measured. Imaging of birefringent particles under crossed polarizers allows for the simultaneous determination of the positions and orientations of both particles. The temporal cross-correlation function between random displa...