Does developmental noise have an epigenetic basis? One's ultimate phenotype is the result of a combination of genotype and environment, and includes a poorly understood component termed ?developmental noise?. The molecular basis of developmental noise remains unknown, but it appears to be established in early development and to be retained for the life of the organism. We propose that the molecular basis of developmental noise is the epigenetic state of the genome. The stochastic nature of th ....Does developmental noise have an epigenetic basis? One's ultimate phenotype is the result of a combination of genotype and environment, and includes a poorly understood component termed ?developmental noise?. The molecular basis of developmental noise remains unknown, but it appears to be established in early development and to be retained for the life of the organism. We propose that the molecular basis of developmental noise is the epigenetic state of the genome. The stochastic nature of the establishment of epigenetic state, combined with its heritability during mitosis, provides all the essential components for developmental noise. If our hypothesis proves correct, our work will have a major impact on the understanding of one of the most basic concepts in genetics.Read moreRead less