You’ve just met a new guy or gal and you want to get to know them. In theory, you could hang out and spend time together. But there’s a shortcut, you know? Ask them (nicely) for a DNA sample and send it to a lab. First, if they’re willing, he/she is a keeper. Second, you’ll get the answers to all your burning questions about their caffeine intake, sleep schedule, and whether or not they sneeze when they look at the sun. Give the gift of human genomic secrets with our chromosome necklace to your soulmate. It also makes an excellent present for geneticists, serious daters, genealogists, and starry-eyed pre-med students.