Today we learned about how sex cells are formed. We learned why sex cells have to have half of the number of chromosomes that normal body cells have. There are two stages of meiosis, meiosis I and meiosis II. Two divisions are needed so that the number of chromosomes remains constant from generation to generation. We also learned that crossing over of the homologous chromosomes during prophase I increases genetic variability.

Homework: Science Notebook Pages 98-100, Article #3 - Due on Monday!