Every neuron in the brain has unique DNA and ancestorship - ongoing record of neuronal life history. https://www.science.org/doi/10.1126/science.aab1785 https:

Every neuron in the brain has unique DNA and ancestorship - ongoing record of neuronal life history. https://www.science.org/doi/10.1126/science.aab1785 https://www.science.org/doi/10.1126/science.aab1785 (2015) : Somatic mutations create nested lineage trees, allowing them to be dated relative to developmental landmarks and revealing a polyclonal architecture of the human cerebral cortex. Thus, somatic mutations in the brain represent a durable and ongoing record of neuronal life history, from development through postmitotic function. https://www.scientificamerican.com/article/scientists-surprised-to-find-no-two-neurons-are-genetically-alike/ https://www.scientificamerican.com/article/scientists-surpri...