I have two aunts who are twins. Apparently the US and europe have similar rates of twin birth - 9 to 16 per 1000 lives.
Wow I had no idea the rate was so low, do you know what kind of different twins are possible? I think fraternal is one kind for instance.
Yes, there are a couple of types. There's identical (they develop from on zygote which splits) and Fraternal, which means they develop from separate eggs. Quite fascinating.
That is quite cool, science is so fascinating. Do you know more about twin births?
In Central Africa there are 18 to 30 sets of twins per 1000 - quite a bit more than we have!
Wow I wonder why the rate is so much higher, does anyone know why?
Not sure. The Yoruba people of Nigeria have an even greater incidence of twin births. It is speculated that is because they eat a lot of a specific type of yam which may stimulate the ovaries. Kind of bizarre, but who knows?