life in reverse

LITA tardigrade dries into a "tun", with metabolism suspended (cryptobiosis), and adding water reverses it, often within minutes to hours. Reverse transcriptase, found independently by Howard Temin and David Baltimore in 1970, copies RNA back into DNA. That reversed the "central dogma" direction and earned them the 1975 Nobel Prize (with Dulbecco).

COMPUTEDReverse transcription of a seeded RNA strand to its complementary DNA (cDNA): A→T, U→A, G→C, C→G, read 3'→5'. Taking the reverse complement twice returns the original. MODELTap to dry or rehydrate the tun; revival time is a toy.

add water / drynew RNA

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