In a developing fetus, what influences whether it is going to become male or female? What influences the cells to start building male or female organs?

Question

In a developing fetus, what influences whether it is going to become male or female? What influences the cells to start building male or female organs?

In: 274

Answer 1

Interesting fact, when they do a blood test on pregnant women, they look for Y chromosomes in the blood to determine if the baby is a boy, because the mother and baby share the same blood.