A few years ago I got a free 23 and Me for participating in some kind of study (honestly don’t remember what part of my genes I agreed to turn over to … (them it science Google?) and here is how 23 and Me keeps you coming back to their site: After they do their initial analysis of you they will every so often add a new “trait,” or some other discovery about you (or sometimes it’s a new terrifying new disease, and you have to click through a lot of different warnings and infographics before you can receive your prize of seeing whether you are a carrier for a variant of the gene, the
lol I have had the identical 23 and me experience. who knew that how photosensitive hair is can be predicted by genes. glad i clicked through