It has several different pathways that all end with the virus being unable to replicate. Viruses can replicate only in living cells. The brothers attempted to assemble a live stage band that could replicate their studio sound. If RNA is left exposed, the virus does not replicate efficiently. The bacteria can then replicate as normal. He considers the origin of life with the arrival of molecules able to replicate themselves. Thus TMV can replicate its own genome. This is largely due to how bacteria replicate. Worms replicate over a network using protocols. These may selectively replicate viral DNA through a variety of mechanisms. Memes can replicate vertically or horizontally within a single biological generation. As a result, papillomaviruses can only replicate in body surface tissues. This last city had been built in an attempt to replicate Troy. The Ronacher production does not replicate the original. Both replicate to all domains in the Forest.