Day 1: Sperm joins with ovum, to form one cell smaller than a grain of salt. The new life has inherited 23 chromosomes from each parent, 46 in all. This one cell contains the complex genetic blueprint for every detail of human development – the child’s sex, hair and eye color, height, skin toneDays 3 – 4: The fertilized egg travels down the fallopian tube into the uterus, where the lining has been prepared for implantationDays 5 – 9: During this time, the fertilized egg implants itself in the rich lining of the uterus and begins to draw nourishment.Days 10...