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Finally an answer to the chinless wonder: Scientists unlock mystery
of why humans are the only primates that have chins and it is not to do with sexuality but soft foodhttp://www.dailymail.co.uk/sciencetech/article-3026233/Scientists-reveal-humans-primates-chins.html?ITO=1490&ns_mchannel=rss&ns_campaign=1490
Contrast: Chimpanzees and monkeys do not have chins, meaning that they must have evolved after humans split off from other primates in the evolutionary tree
Reese Witherspoon is a star with the prominent facial feature
* New research shows that the human chin did not just evolve randomly
* It appears to have emerged around 2million years ago when humans became more intelligent and started cooking food
* Softer food meant people needed smaller teeth and jaws to chew their diet
* Scientific breakthrough casts doubt on theory of sexual selection