Not everyone grieves genetic loss. This piece explores the complex, personal journey of donor conception—and why your feelings, whatever they may be, are valid.

What’s the facial feature in question? Dimples. The Institute of Human Anatomy (IOHA) puts out videos about the body which are informative and often a little squeamish in equal measure.

There’s a lot you can figure out with DNA.” said Sean Salemink, a 23andMe user out of Iowa City. Originally born ...