Testes 1. Where does meiosis occur? 2. Why is mitosis incompatible with the production of sex cells, specifically, sperm and oocytes? TIME TO PRACTICE! GO TO THE QUIZZES MENU AND COMPLETE CELL LIFE CYCLE QUIZ 3.A. PUTTING IT ALL TOGETHER In cellular physiology, there are almost always exceptions to the rules! Here are a few examples of rule breakers in the world of the cell cycle. 1. During the first few days of human development, cell proliferation is very rapid, and as cells divide by mitosis, the G1 and G2 phases are very short. How do you think this impacts cell size during this period of development? 12 2. The cells in red bone marrow that produce blood platelets are called megakaryocytes, which can be loosely translated as big nucleus cells. These cells continue to move through the cell cycle, but they skip mitosis and cytokinesis. Review the steps of the cell cycle. What do you think the result of this modified cell cycle would be? 3.Cell growth and progression through the cell cycle is a process that requires tight regulation. We have specific genes that can inhibit the progression of a cell through the cell cycle. If these genes are damaged through a mutation, what could be the consequence?