Worried about your privacy after taking an at-home DNA test? Here's what you should know and what you can do. If you’ve sent a DNA sample such as a tube of spit to 23andMe, Ancestry, MyHeritage, or one of the many other companies that offer direct-to-consumer genetic testing, you’ve sent them the essential information they need to provide you with their analysis of your genetic code. [SNIP] But if you later decide that you want to remove your genetic information from the web for privacy reasons, can you? And should you? Genetic data can reveal information about your health, your...