Your baby doesn’t magically — poof! — turn into an embryo immediately after conception. There’s a whole process that you probably learned about (and possibly forgot) in your high school ...

4 “We know so little about the very early stages of human development,” said Nicolas Plachta ... fused to a membrane trafficking sequence into one of the two cells of the zygote. Thus, they could ...

Mature ova are released from the ovary into the oviduct where they may be fertilised by sperm to form a zygote. In humans ... internal fertilisation. The human female reproductive system working ...