Sentence:  Every cell in the body contains the same DNA but <WSD>epigenetic</WSD> settings on cells in the bone and blood, for example, mean the tissues do very different jobs. The <WSD>epigenetic</WSD> consequences of a huge range of environmental factors are under investigation, from exposure to drugs, chemicals and hormones, to the impact of poor maternal care in infancy, and the likelihood that they are as hereditable as DNA. 
Meaning of the word marked with <WSD> tags:  Of or relating to epigenetics.