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GER412 WR ASSIGN 1 - females Black skinned individuals...

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GER-412-OL-009 Differentiate the term Maximal Longevity (XL) from the term Mean Longevity (ML) and describe how the genes related to aging help determine an organisms ML and XL. Maximal Longevity (XL) is a statistical number that represents the longest number of years a human has survived. According to our textbook, this is currently around 130 years in the US. As with any statistical number, there is a high, low and median range. The term Mean Longevity (ML) represents the median or average age that most humans can expect to live. Seventy-eight (78) years is the average age in the US. While everyone has an even starting point at birth there are predetermined genes that ultimately have a role in our ML. Those born with male genes on average have shorter life spans than
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Unformatted text preview: females. Black skinned individuals statistically live shorten than Caucasians. XL is more static, driven by the hard code in our genes. ML can be decreased or increased by outside factors. For the general population, the ML number has been in a pattern of gradual increase. Factors influencing ML include: nutrition, stress, exercise and disease. Lets say an individual knows their family has a history of heart disease and deaths around age 50 with one family member reaching 65. The XL of the family would be 65 years and the average life expectancy might be 53. This individual has the potential to alter their life expectancy through intervention with medicines, diet and stress levels. They can live to 70 and increase the family’s XL and ML at the same time....
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