Chadi Raheb’s Reviews > 30-Second Evolution: The 50 most significant ideas and events, each explained in half a minute > Status Update

“Humans have enormous brains that make us smart, but we are not smart enough to work out exactly why!” 🤣

“Controversial studies suggest that people prefer mates who smell different to themselves. This difference in odour is caused by the MHC, which controls the expression of cell surface receptors & plays a key role in immunity. Intriguingly, it has been suggested that women taking the contraceptive pill prefer males with MHC similar to their own, while those not taking it prefer different odours.”

“Sex can be dangerous. The female praying mantis bites the head off the male during mating; snails fire a love dart into their mate as part of courtship.”

“Fig wasps can choose their offspring sex; fertilized eggs become female, unfertilized male.”

[If I were a fig wasp, I would’ve chosen XX;
every
single
time]

“Social behaviour can seem counterintuitive from an evolutionary standpoint, but in reality social behaviours increase the ability to survive and pass on genes.”

[و اینگونه بود که من منقرض شدم‌😂]

“Darwin noted that extinction happens gradually. A species dwindles, until competition or some unlucky event finally nudges it over the edge. […] Now that humans can colonize every environment from seabed to space, we have ourselves become a major cause of extinction; come the next big extinction, will we die like dinosaurs or brazen it out like brachiopods?”

چه چهارشنبه زیباییه 🎉💃

“Why did most mammals stop laying egg? The credit or blame probably goes to virus -a distance relative of HIV that has infected mammals so thoroughly that there are now thousands of old broken copies of the virus littering your DNA. Part of one virus, called syncytin, still works. Syncytin effectively transforms the pregnant mother into a walking egg by passing nutrition and oxygen across the womb.” 🤯

چه دوشنبه‌ی زیباییه 🥂