Listed below are four possible causes of aging that were discussed in the text and in the questions above. As a review, name the theory that is associated with each cause, and describe whether selection for a longer life span is possible under each theory. What predictions does each theory make about the effect of ecological mortality (death due to external causes—predators, starvation, etc.) on aging rate?
● “Wearing out” due to metabolic activity
● Reduction in size of telomeres with each cell division
● Mutations that have negative effects late in life
● Mutations that have positive effects early and negative effects late in life
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