BIOLOGY 1A03 Chapter Notes - Chapter 12: Chronic Myelogenous Leukemia, Patau Syndrome, Asexual Reproduction

• School: McMaster University
• Department: Biology
• Course: BIOLOGY 1A03
• Professor: Rosa Da Silva

Document Summary

Mitosis producing 2 identical daughter cells (asexual reproduction) Meiosis: producing 2 daughter cells with variations (sexual reproduction) 23 pairs of chromosomes and 46 chromosomes in total. Above the centrosome is the p arm and below the centrosome is the q arm. Some genes can affect other genes that are upstream or downstream. A display of an individual"s chromosomes that is organized in terms of chromosome number, size and type. Karyotypes are useful for genetic screening to identify specific chromosomal defects in their number , size and type. Males have an abnormal number of sec chromosomes, xxy. A large portion of chromosome 22 switches with a small piece from chromosome 9 recognizable shortened chromosome 22 (philadelphia chromosome) Is a cancer, which affects the cells that given rise to white blood cells. Length plays a role in crossing over: the longer then chromosome the more crossing over events will take place. Meiosis is often referred to as the reduction process.