BEST DEALS ON DNA TEST KITS: AncestryDNA: Genetic Ethnicity Test — $59 23andMe Health and Ancestry Service —  $149 with on-page coupon 23andMe Ancestry + Traits Service — $88.95 Some 30 million people had taken an at-home DNA test as of early 2020. That number could be as high as 100 million in the following…