Researchers have developed a novel method to estimate the age of zebra sharks using DNA methylation patterns in their blood. This new epigenetic clock can predict a shark's age with a median error of one to two years, utilizing information from just a few specific spots in the genome. This breakthrough is significant because sharks, with their diverse lifespans and ancient evolutionary lineage, have been a challenge to study in terms of aging. The findings suggest that some fundamental biological mechanisms of aging, like DNA methylation patterns, may be conserved across a vast evolutionary distance, even between sharks and mammals. AI
RANK_REASON Research paper detailing a new method for aging animals using DNA methylation. [lever_c_demoted from research: ic=1 ai=0.4]
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