The __________ theory of aging receives some support from kinship studies indicating that longevity is a family trait.
A) genetically programmed
B) wear-and-tear
C) random events
D) cross-linkage

Question

Quizplus · Accepted Answer

The fact that longevity appears to run in families suggests that genetics may play a significant role in the aging process, supporting the genetically programmed theory of aging. Wear-and-tear theory suggests that aging is simply the result of accumulated damage to the body over time, which does not necessarily explain why some individuals are able to live much longer than others. Cross-linkage theory suggests that aging occurs due to the buildup of cross-linked proteins, which can cause cellular dysfunction and damage, but this theory is not directly supported by kinship studies. Random events theory suggests that aging is a result of chance occurrences that accumulate over time, and again, this does not explain why some individuals are more likely to live to a very old age than others.

The __________ Theory of Aging Receives Some Support from Kinship