
Featured news
16 Dec 2022
Screening a puppy’s DNA methylome may help predict how energetic or fearful they will be
By Mischa Dijkstra, Frontiers science writer Scientists found that differences in the epigenome, in particular the DNA methylome, are predictably associated with differences in the temperament of dogs, especially their energy and fearfulness. The DNA methylome predicted these traits better than Single-Locus Polymorphisms or age. In future, breeders could screen the epigenome of puppies to find the best candidates for companion or service dogs. Anyone who’s ever had a dog knows how different one can be from another. For example, they can be reserved or friendly, playful or calm, fearful or bold, and prone to bark or fetch or not. Research has shown that some of these differences are genetically determined. But even within dog breeds, where line breeding and artificial selection have led to the loss of much of the original genetic variation, the behavior of individuals can differ widely. Now, researchers show that part of the differences in temperament – in particular their ‘energy’ level and fear-related behaviors – depend on acquired differences in the epigenome. The epigenome, an individual’s unique set of chemical tags on DNA and its associated histone complexes (nucleosomes), can dial the expression of local genes up or down. Because the epigenome is known […]