What is a simple statement predicting the results of a controlled scientific experiment

The simple statement predicting the results of a controlled scientific experiment is called HYPOTHESIS.
Hypothesis is the proposed explanation that is made on the basis of limited evidence as a starting point further investigation. 

Cell division is important to single celled organisms because it allows the cells to reproduce. through cell division, cells make exact copies of themselves. when single celled organisms go through cell division, they make exact copies of themselves which is how they reproduce.

4, two dominant and two recessive