![]() Rats, mice and hamsters experience maximum life span extension from a diet which contains 40−60% of the calories (but all of the required nutrients) which the animals consume when they can eat as much as they want. ![]() However, this is true only if we use definition 2 of maximum life span, as caloric restriction has not yet been shown to break mammalian world records for longevity. Aging theories associated with DNA include programmed aging (or programmed aging-resistance) and theories that link aging with DNA damage/mutation or DNA repair capability.Ĭurrently, the only (non- transgenic) method of increasing maximum life span that is recognized by biogerontologists is calorie restriction with adequate nutrition. Identical twins tend to die within 3 years of each other, whereas fraternal twins tend to die within 6 years. The difference in longevity could be due to as few as a hundred genes or less, however there may be other factors which influence the life span of chimpanzees. Of the approximately 20,000 to 25,000 genes in the human genome, it is estimated that only 2% of these are different from those of a chimpanzee, which has an average lifespan of 52 years. Maximum life span is usually longer for species that are larger, can fly and have larger brains. The maximum life span of most species has not been accurately determined because the data collection has been minimal and the number of species studied in captivity (or by monitoring in the wild) has been small. Grazing animals show wear-and-tear to their teeth to the point where they can no longer eat, and they die of starvation. ![]() Birds and squirrels rarely live to their maximum life span, usually dying of accidents and disease. A Great Basin Bristlecone Pine is almost 5000 years (4844 years), and Prometheus was even older, more than 5000 years.Īlthough considered fiction for a time, recent research has indicated that bowhead whales recently killed still had harpoons in their bodies from the 1790s, which, along with analysis of amino acids, has indicated a maximum life span so far of 211 years. A giant sequoia, General Sherman is alive and well in its second millenary. The longer-lived perennials, woody-stemmed plants such as trees and bushes, often live for hundreds and even thousands of years (one may question whether or not they may die of old age). Plants tend to come in annuals, biennials, and perennials. ![]()
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