RE: Science Nerds: Could Jupiter's Magnetic Field be harvested for energy?
May 7, 2021 at 12:33 pm
Quote:DNA damage
Exposure to high doses of radiation cause DNA damage, later creating serious and even lethal chromosomal aberrations if left unrepaired. Ionizing radiation can produce reactive oxygen species, and does directly damage cells by causing localized ionization events. The former is very damaging to DNA, while the latter events create clusters of DNA damage.[36][37] This damage includes loss of nucleobases and breakage of the sugar-phosphate backbone that binds to the nucleobases. The DNA organization at the level of histones, nucleosomes, and chromatin also affects its susceptibility to radiation damage.[38] Clustered damage, defined as at least two lesions within a helical turn, is especially harmful.[37] While DNA damage happens frequently and naturally in the cell from endogenous sources, clustered damage is a unique effect of radiation exposure.[39] Clustered damage takes longer to repair than isolated breakages, and is less likely to be repaired at all.[40] Larger radiation doses are more prone to cause tighter clustering of damage, and closely localized damage is increasingly less likely to be repaired.[37]
Somatic mutations cannot be passed down from parent to offspring, but these mutations can propagate in cell lines within an organism. Radiation damage can also cause chromosome and chromatid aberrations, and their effects depend on in which stage of the mitotic cycle the cell is when the irradiation occurs. If the cell is in interphase, while it is still a single strand of chromatin, the damage will be replicated during the S1 phase of cell cycle, and there will be a break on both chromosome arms; the damage then will be apparent in both daughter cells. If the irradiation occurs after replication, only one arm will bear the damage; this damage will be apparent in only one daughter cell. A damaged chromosome may cyclize, binding to another chromosome, or to itself.
https://en.wikipedia.org/wiki/Acute_radiation_syndrome
Radiation poisoning results from damage to the DNA. A resistance to such damage would require a major overhaul to DNA replication which itself would probably be harmful, so it seems unlikely.