Linked Questions

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votes
1answer
350 views

If crocodiles are k-selected, why do they supposedly "not age," as in avoid senescence?

I recently saw a few sources stating that Crocodiles do not biologically age, implying negligible senescence. Basically, a 70 year old crocodile is in the same physical/health condition as a 7 year ...
1
vote
0answers
188 views

Does reproduction cause aging ? Is aging just a strategy to increase reproductive success in all organisms? [closed]

Background for why I am asking this: I read a book—modern biological theory and experiments on celibacy— which uses life history theory to imply that reproduction is the reason why organisms grow old....
2
votes
1answer
113 views

Whitening of hair at old age [duplicate]

Human beings have evolved from their ancestors to their modern forms adapting many changes in structure and I would assume that every change has a significance. So, what is the cause of our hair ...
0
votes
1answer
77 views

Would it be more genetically efficient to have shorter lifespans?

If, for example, humans had an average lifespan of, say, 30 years, and we reached sexual maturity at age 10, then we could "evolve" more quickly and theoretically "weed-out" more genetic diseases ...
1
vote
0answers
98 views

Name/Examples of Traits whose benefit is non-obvious and/or which evolve despite apparent mal-adaptivness?

I'm a graduate student in cognitive science doing work on people's explanations and learning, particularly having to do with natural selection. Often, students misunderstand natural selection as a "...
1
vote
1answer
46 views

Passing on the DNA of old age

I've often pondered the fact that we only pass on the DNA of our youth. Any mutations to our DNA that occur after having children, that may help us to respond to getting older, are not inherited. Do ...
0
votes
0answers
31 views

Why can't a genetically sound human stay alive for an indefinite amount of time given all the ideal conditions? [duplicate]

I have read that even if we can control our food and lifestyle and keep things as ideal as possible, there are other factors beyond our control like effects from neutrinos passing through our body ...

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