https://www.ehow.com/how-does_4922977_human-embryo-development-twins.html
I typed in "how late can an embryo split into twins?" because my bestie just did IVF and was asking me exactly how the whole thing works...I know not all websites are correct...but...maybe this is where most of our "hey are your boy and girl identical?" type questions stem from...misinformation. lol.
Re: Hey MoM's does this sound right?