Bud Jetsun Posted December 26, 2017 Beautiful, thank you. Similar appearing to biological functions. 4 Share this post Link to post Share on other sites
Marblehead Posted December 26, 2017 DNA: A twisted zipped zipper. Share this post Link to post Share on other sites
Gerard Posted December 27, 2017 I posted this a while ago, so here we go again: 4 Share this post Link to post Share on other sites
