This process takes about two weeks to complete. ... After one week, the zygote will arrive at the uterus. ... This phase is called the "period of the embryo" and start at the third week after conception and finishes at the end of the eighth week. ... At eight weeks, the major body parts can be clearly seen. ... The "period of the fetus" begins at the ninth week and completes at birth. ...

• Word Count: 2119
• Approx Pages: 8
• Has Bibliography
• Grade Level: High School

The History of Cloning The history behind the concept of cloning dates all the way back to 1902 when Walter Sutton proved chromosomes contained genetic information. This is what is widely accepted as the "beginning- of cloning, as we know it today. Also in 1902, Hans Spemann divided a salamand...

• Word Count: 1955
• Approx Pages: 8
• Grade Level: High School