dna 半分とは
Microbes occupy all of our body surfaces including the skin gut and mucous membranes. A gene is the basic physical and functional unit of heredity. In fact our bodies contain at least 10 times more bacterial cells than human ones blurring.
There is a close connection between microbes and humans experts believe about half of all human dna originated from viruses that infected and embedded their nucleic acid in our ancestors egg and sperm cells.

Dna 半分とは.























































































