Life's Greatest Miracle by NOVA PBS
We are driven by the need of DNA to replicate through sexual reproduction. A Fundamental definition of Life itself. Only Life can replicate, basic matter can not replicate.
This documentary explains how Chromosomes merge during conception to create a new, but different generation biologically related to their parents. The genes of your children, aren't just inherited from their parents, but also their parents ancestry.
Females start creating their eggs while they are fetuses prior to their own birth. While men start generating their sperm cells in puberty and end up crating more than 2 trillion sperm cells through their entire life time.
The Journey of our reproductive sperm cells and egg cells enter into a majestic journey of battling their way to conception. In the end, hundreds of millions of sperm cells die, only 1 or 2 survive to complete their mission. And that is only if ovulation has already occurred.
An unfertilized egg only has a few hours to be fertilized before die-ing. And after conception we spend our first 24 hours as a single cell that is as small to the mother as the mother is to the size of the Earth. Then the Journey of Life to human hood begins.
As this journey continues there are many dangers and biological miracles that must happen before a successful conception moves in to pregnancy and on to Birth can happen.
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