Samuel Sternberg

“Rather than copying one DNA strand to make the other, as happens in normal DNA replication, the system uses two different reverse transcriptases to independently generate the two complementary strands”

“The result is an extraordinarily simple strand of DNA, consisting of the repeating sequence C-A-C-A-C-A”

“When they did, both DNA synthesis and the bacterium's antiviral defense broke down, confirming that the amino acids were critical to the process”