How much of your microbiome is unknown?

A. 10%

B. 30%

C. 50%

D. 99%

 

Answer: D

Strangers Inside You: A team of researchers discovered that 99 percent of the non-human DNA floating around in the human body didn't match anything in existing genetic databases. http://newatlas.com/99-percent-microbiome-unknown/51037/