Where does the blood in a fetus comes from? Is it transferred from the mother or created by its own cells?

Question

Where does the blood in a fetus comes from? Is it transferred from the mother or created by its own cells?

In: 14

Answer 1

It’s created by its own cells.

No blood from the mother enters the fetus or vice versa, it stays separate.

The fetus’s blood and the moms blood both path close by each other in the placenta to transfer nutrients, but the blood itself isn’t mixing.