Modern babies are being born without wisdom teeth as humans continue to evolve at a rapid rate, a study has found.
In addition to that, they seem to have an extra artery in their arm as a result of a human "microevolution" in recent years.?
Australian researchers who worked on a study in the Journal of Anatomy, claim the human race is evolving faster than it has done at any point in the past 250 years.
Over time, human faces have got shorter, which has seen our mouths get smaller, with less room for as many teeth.
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Scientists at Flinders University in Adelaide have discovered that people are undergoing a micro-evolution in which evolutionary changes can be observed over a short period of time.
"This is happening in time as we have learnt to use fire and process foods more. A lot of people are just being born without wisdom teeth,"?Dr Teghan Lucas, of Flinders University in Adelaide,?said.
The research also found that some people are being born with additional bones in their arms and legs as well as shorter faces, or with abnormal connections of two or more bones in their feet.
"A lot of people thought humans have stopped evolving. But our study shows we are still evolving - faster than at any point in the past 250 years," she added.
An artery in the forearm that supplies blood to the hand has become more prevalent in newborns since the 19th century, the study also found.?The artery forms while a baby is in the womb and is the main vessel that supplies blood to the forearm and hand, but it disappears during gestation and is replaced by the radial and ulnar arteries.
Now, one in three people keep their median arteries for their whole lives, which is risky as it leads to an increased blood supply to the hand.?
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"But increasing numbers of cases retain it, so a person can have all three arteries," the authors wrote.?"This evolutionary trend will continue in those born 80 years from today, with the median artery becoming common in the human forearm."
The research was carried out by tracking the rate of retainment of different parts of the body through the generations, and dissecting preserved corpses of people born throughout the 20th century.??