CHM110H5 Lecture Notes - Lecture 3: Ovulation, Tubulin, Monosomy
Document Summary
The words mitosis and meiosis are known to make biology students shudder. Both processes involve a lot of awkward terminology that can be difficult to remember before you have a strong grasp of the underlying mechanisms. The goal of this tutorial is to help you understand and appreciate the logic and machinery of meiosis, while reinforcing what distinguishes meiosis from mitosis. In sexual reproduction, each parent passes on half of his or her. Sexual reproduction requires the fusion of one sperm and one ovum (egg) to produce a new organism. Our gametes (sperm or ova) are produced by meiosis, which involves a parental cell undergoing a pair of cell divisions, resulting in the production of four daughter cells. Approximately half of all human pregnancies are spontaneously aborted, often due to mistakes in meiosis. 123 other mistakes in meiosis are survivable, but can produce severe developmental abnormalities.
