20 teeth
By the time the embryo is eight weeks old, there are ten buds on the upper and lower arches that will eventually become the primary dentition. These teeth will continue to form until they erupt in the mouth.
Answer: When turned on, genes provide the code for creating protein molecules, the building blocks of physical development.
Explanation:
The answer is Legal issues. (This question is from the Summer school website called APEX)<span />
