This link might help answer your questions. Also, half-life in this context is just referring to how long it takes the number phosphodiesterase linkages (bonds

This link might help answer your questions. Also, half-life in this context is just referring to how long it takes the number phosphodiesterase linkages (bonds holding the DNA backbone together) to decrease by 1/2. Half-life can refer to other types of decay as well :-) https://www.nature.com/news/dna-has-a-521-year-half-life-1.11555 https://www.nature.com/news/dna-has-a-521-year-half-life-1.1...