From the moment in time where the sperm and egg cell(haploid cells) combine to where the fetus is born
The egg enters the fallopian tube and starts its journey towards the uterus
One of the millions of sperm that have been travelling towards the egg manages to penetrate it
The sperm loses its tail, leaving only the head (which contains the genetic material) inside the egg. Fertilisation occurs when the genetic material from the egg and sperm combine
As the fertilised egg (known as a zygote) continues to travel along the fallopian tube, it starts to divide and form an embryo
After zygote has developed into an embryo by mitosis, it develops further into a fetus
Baby is born after 9-12 months of pregnancy
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