Secret of human evolution has been unlocked by a 33-year yeast experiment2 min read
The secrets of human evolution have apparently been unlocked – and all it took was a 33-year experiment involving a packet of yeast.
A bunch of scientists at a laboratory in Atlanta, Georgia, United States, are continuing an experiment started in 1988 by a teacher who is a former student.
The strange experiment started by Will Ratcliff saw him take some yeast and swirl it around a test with some water.
READ MORE: Giant asteroid the size of 65 Peter Crouches set to slam into Earth's orbit tomorrow
The ones at the bottom were removed and used to grow the next day's population of yeast, the New York Times reports.
This experiment has now been repeated thousands of times across the 33-year via various students.
He hoped that by doing this, mutations would form – and they did.
The yeast started turning into “snowflake years”, which basically means they were forming genetically identical cells in each pot, and the yeast had become multicellular.
He said: “All of the lineages that we know of that evolved multicellularity, they made this step hundreds of millions of years ago, and we don’t have a lot of information about how single cells form groups.”
Meteor shower lights up sky on morning of King Charles' Coronation in spectacular sight
The experiments also proved how vital oxygen has been in the role of evolution.
Some of the yeast was put in a low oxygen environment, which saw the particles having to compete for it.
A newly-released reported on Nature.com states: “This occurred through biophysical adaptation—evolution of increasingly elongate cells that initially reduced the strain of cellular packing and then facilitated branch entanglements that enabled groups of cells to stay together even after many cellular bonds fracture.
NASA should send all-female crew to Mars because women more suited, say experts
“By contrast, snowflake yeast competing for low oxygen remained microscopic, evolving to be only around sixfold larger, underscoring the critical role of oxygen levels in the evolution of multicellular size.
“Together, this research provides unique insights into an ongoing evolutionary transition in individuality, showing how simple groups of cells overcome fundamental biophysical limitations through gradual, yet sustained, multicellular evolution.”
So next time you're eating some bread, think about how important the yeast you're swallowing actually is.
For the latest breaking news and stories from across the globe from the Daily Star, sign up for our newsletter by clicking here.
'Definitive proof' of big cats roaming UK countryside as sample is 99% DNA match
Tourists flood party city home to 80p beer and 10k sex workers as Brits told 'stay away'
Tragic Brit holidaymaker burned alive in Turkey after caravan burst into flames
King Charles disappointed with 'unfair' task during first post-Coronation royal outing
Lawyer who slammed Queen Camilla photo as 'racist' backtracks and deletes scathing tweet
Source: Read Full Article