Becker's World of the Cell 9th Edition by Lewis Kleinsmith, Jeff Hardin, Gregory Paul Bertoni

تمرين 6

DNA Damage and Repair. Indicate whether each of the following statements is true of depurination (DP), deamination (DA), or pyrimidine dimer formation (DF). A given statement may be true of any, all, or none of these processes.
(a)This process is caused by spontaneous hydrolysis of a glycosidic bond.
(b)This process is induced by ultraviolet light.
(c)This can happen to guanine but not to cytosine.
(d)This can happen to thymine but not to adenine.
(e)This can happen to thymine but not to cytosine.
(f)Repair involves a DNA glycosylase.
(g)Repair involves an endonuclease.
(h)Repair involves DNA ligase.
(i)Repair depends on the existence of separate copies of the genetic information in the two strands of the double helix.
(j)Repair depends on cleavage of both strands of the double helix.