Characterization of a novel population of enteric nervous system glial cells in zebrafish reveals their proliferative and neurogenic properties under homeostatic conditions in adults, properties difficult to model in mammals.
Variation in autumnal expression from starting expression levels and initial cold-down-regulation, rather than epigenetic silencing, is the major field variable conferred by worldwide haplotypes of the floral repressor gene, FLC.
Duplication of Leishmania chromosomes combines S-phase DNA replication initiated at a single internal region with subtelomeric DNA replication detectable outside S-phase, potentially explaining genome plasticity in this important parasite.
The transcription factor, MEF2C, mediates a change in approximately one half of the expressed frontal cortical transcriptome controlling cellular metabolism and synaptic strength in response to acute loss of sleep.
Evidence is mounting that environmentally-induced adaptive changes in phenotype can be transmitted across generations, but mechanistic gaps and theoretical concerns must be addressed to impact mainstream views of evolutionary adaptation.