Through which medium does kammic information travel after the break-up of the body?

If we understand *kamma-vipaka* as the process of creation and perpetuation of habitual volitional deeds, we can see that, in a living being, there's a medium through which behavioral information is stored and expressed: the nervous-system and its constituents. Information is stored through the reinforcement of synaptical conections. If we agree on that, it seems that there's no need for additional explanations for the arising and ceasing of behaviors. How does this happens after the break-up of the body? How is information transferred from the last moment before death to the newborn? Does that information waits until the formation of the brain? Is it stored in the DNA? Do the buddhist texts offer any clue to understand this process? Do you know something that could help me to understand this process? I know DNA and the role of the nervous system are recently known and understood (at least in part) phenomena. I'd be happy to learn about any hypothesis or tentative explanation for this process. I don't know if this question is a valid one for this site. If it's not, feel free to close it; I'd understand. Thanks for your time and patience! Kind regards!