1. These carry all of the genetic information necessary for the development of a unique individual.
   a. genes b. DNA c. sperm cells d. chromosomes  
2. Of all the human traits determined at conception, none is as significant as ___________.
   a. intelligence b. ethnicity c. gender d. height  
3. The first stage of prenatal development which lasts about 2 weeks after conception involves the rapid growth of a shapeless mass of cells and is known as:
   a. the period of the embryo b. the period of the ovum c. the period of the fetus d. the period of the zygote  
4. The second period of prenatal development begins around 2 weeks after conception and extends to approximately the eighth week.  During this stage almost all major organs and structures of the human body are formed and many begin to function.  This stage is known as:
   a. the period of the embryo b. the period of the ovum c. the period of the fetus d. the period of the zygote  
5. The final prenatal stage is marked by continued development of the organs and rapid growth.  This stage is known as:
   a. the period of the embryo b. the period of the ovum c. the period of the fetus d. the period of the zygote  

In order to receive credit you must supply your name AND email address below:
Name:      Email: