Together, these two cells contain all of the new individual's hereditary information, stored in a space so small it cannot be seen by the naked eye. Twenty-three chromosomes from each parent unite in one new cell. These chromosomes contain thousands of genes which determine all of the physical characteristics of the unborn person. Approximately 22 days after these two cells unite, a little heart begins to beat. At 26 days, blood begins to circulate.
Cells multiply and divide.
Each organ is a wondrous gift from God. The eye has a self-focusing lens. Nerves and muscles control two separate eyes to make a single three-dimensional image. The eyes are connected to the brain, which records the sights seen. No cords or batteries are needed.