Terrence talked a lot about everything as code, and DNA being that code, or part of that code anyway. He's talked about it a lot in different ways, so I'm not sure what talk OP is specifically referring to. He gave a couple of talks that are related to I Ching, it might be in detail in one of those.

https://www.youtube.com/watch?v=Zk8GsaRA6aY

There was at least one talk where he clearly speculated that, spirituality aside, he thinks DNA plays a role in long term memory formation just because that's physiologically the only place memories could persist. Unfortunately the only record of this I knew about has been deleted from youtube.