3 ms·
From the paper's Introduction: > The regression of the median artery commences at approximately the eighth week of intrauterine life. However, the median arter
by sradman 6y ago
From the paper's Introduction:
> The regression of the median artery commences at approximately the eighth week of intrauterine life. However, the median artery persists in a considerable number of foetuses of gestation ages 13–38 weeks, in newborns and infants and in adults.
I'm guessing no to epigenetics unless it involves a change in the intrauterine environment.
- jessaustin 6y agoChanges to the intrauterine environment (which is affected by the larger environment that has seen significant changes) are vastly more likely than selection pressure of the strength proposed in TFA. More likely yet is that this is a spurious interpretation of bad data. The anatomists of centuries past weren't looking at the median arteries of all humans.