Behavioural evidence and computational analyses suggest that people tend to decline the pursuit of more rewarded goals because they, wrongly, expect them to require more effortful actions.
Jamie L Courtland, Tyler WA Bradshaw ... Scott H Soderling
Cellular etiology of a human WASH complex mutation in mice reveals its specific roles in neuronal organelle trafficking and a surprising role in motor impairments.
The concentration gradient of Bicoid protein positions gene expression domains along the anterior/posterior axis of the Drosophila embryo during the cleavage, pre-syncytial blastoderm stages.
Colleen E Hannon, Shelby A Blythe, Eric F Wieschaus
Interplay between protein concentration, DNA binding and remodeling of the chromatin landscape in early embryogenesis determines how a single transcription factor can specify multiple distinct gene expression states.
Transgenic animals carrying reconstructed ancestral alleles reveal how two ancient mutations allowed a regulatory protein to evolve a controlling role in embryonic development in flies.
The hunchback transcription features are compatible with an equilibrium model with a short decay length Bicoid activity gradient as the sole source of positional information, while Zelda and Hunchback speed-up the process by different means.