Science & Tech - 43 free documentaries about dna & genetics.
Start with When Cousins Marry (47 min, Real Stories), then Extracting DNA from strawberries and eating it (12 min, NileRed). All 43 documentaries here are free to watch from their makers' official uploads. To read deeper, the top-rated book on dna & genetics is The Gene by Siddhartha Mukherjee.