Explained: How human beings
lost their tails
Explained: How human beings lost their tails on Business Standard. Charles Darwin first recognised this
change in our ancient anatomy. But how and why it happened has remained a mystery
Current Affairs A team of scientists in New York say they have
pinpointed the genetic mutation that may have erased our tails. When
the scientists made this genetic tweak in mice, the animals didn’t grow
tails, according to a new study that was posted online last week.
This dramatic anatomical change had a profound imp-act on our
evolution. Our ancestors’ tail muscles evolved into a hammock-like
mesh across the pelvis.
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When the ancestors of humans stood up and walked on two legs a few
million years ago, that muscu-lar hammock was ready to support the
weight of upright organs.
Although it’s impossible to definitively prove that this mutation lopped
off our ancestors’ tails, “it’s as close to a smoking gun as one could
hope for,” said Cedric Feschotte, a geneticist at Cornell...Read more.
News Source : BS / Business Standard