One heck of a unique Mother's Day card. You got your mitochondria from your mother in the egg cell from which you came. Mitochondria have their own DNA which can be used to trace your mother's mother's mother's mother's mother back through thousands of y
17 Things you should know about DNA (Infographic). It's the basic building block of all life but what do you really know about it? See how you compare to other humans and crack the genetic code with this informative infographic.