Description
View the video Life’s Greatest Miracle (Links to an external site.) and answer the following questions in your own words.
Passing on your DNA
Why is sexual reproduction more advantageous than cloning?
The Egg’s Journey
Describe the path the egg takes after being released from the ovary.
The Sperm’s Journey
What kind of obstacles will a sperm encounter once it enters the female?
The First Two Weeks
Why would more than 50 percent of all fertilized eggs not survive? What kind of problems could a fertilized egg encounter?
The Embryo Takes Shape
Describe the three cell layers that develop and include what parts of the body those cell layers will become.
How are genes turned on?
Messages in the Gene
Before the 7th week of development, how can you tell the sex of the fetus?
Describe how the fingers develop in the fetus.
Feeding the Growing Fetus
Why can’t a baby hear until after its bones have developed?
The Third Trimester
Why is human childbirth so much more dangerous than the births of other animals?
Video Link: https://www.pbs.org/wgbh/nova/video/lifes-greatest-