2005/09/24 by Robersy Sanchez, Robersy Sánchez, Sanchez, Robersy +3
Biochemistry, Genetics and Molecular Biology · Physics and Astronomy · #Astro and Planetary Science #Astrophysics (astro-ph) #FOS: Biological sciences #FOS: Physical sciences #Gamma-ray bursts and supernovae #Populations and Evolution (q-bio.PE) #Quantitative Methods (q-bio.QM) #Space Science and Extraterrestrial Life #astro-ph #q-bio.PE #q-bio.QM
paper · pdf · doi:10.48550/arxiv.q-bio/0509033
9 pages, 4 figures
arxiv created 2005/09/24 · openalex publication_date 2005/09/24 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The current understanding of supernova and gamma-ray burst events suggests important effects on the biosphere if one of more of them happened to strike the earth in the past. In this paper we evaluate the possibility that life extinctions which probably occurred due to excess of radiation occurring in the geologic past might have left a genetic signature on surviving species. We emphasize the signatures of these extinctions, proposing a quantitative model to evaluate the surviving probability of the species, based on kinetic aspects of the frequency of mutations and the DNA repair rate.