From BBC NEWS:
http://www.bbc.co.uk/news/science-environment-14669012
Big Black Ants
Animal Behavior and Ant Obsessions
8/25/11
8/21/10
A nice example of convergent evolution? Not so fast....
Puffer fish toxins probably come from their diet, and remarkably, pufferfish have gene mutations that make them resistant to the effects of the toxins. Furthermore, other species, like snakes, have evolved resistance to these toxins!
Article in the NYTimes
(Image from Wikimedia by Mila Zinkova)
Article in the NYTimes
(Image from Wikimedia by Mila Zinkova)
Why do female great apes (including humans) and female whales go through menopause?
It's about trading off between having new offspring, and investing in current offspring. I'd hazard a guess that it's more likely to evolve in cooperatively breeding groups with long lifespans....
Article on BBC
Read more about the "Grandmother Hypothesis"
Article on BBC
Read more about the "Grandmother Hypothesis"
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