Human 'microevolution' sees people born without wisdom teeth and extra artery
news.sky.com
news.sky.com
https://sci-hub.se/https://onlinelibrary.wiley.com/doi/abs/1...
They predict that all people in 80 years are going to carry that median artery. So in the span of like 200 years we will have evolved to include this artery.
"The observed increase therefore in the prevalence of persistent median arteries in adult forearms of people in many countries may be a trend associated with the evolutionary process."
If I'm reading the paper correctly, they're not suggesting that this is because the artery provides some survival or reproductive advantage. They're just saying the trend is likely to continue.
The method they used is very invasive, so used only on dead bodies.