Meiotic Cell Division

• Oogenesis: the production or development of an ovum.
• Spermatogenesis: the production or development of mature spermatozoa.
• Males produce small, motile gametes (sperm)
• Females produces large, immotile gametes (egg)
• Nondisjunction

  • Two many chromosomes are pulled to one side of the cell
  • Chromatids are not pulled apart properly
• Independent assortment and linkage are more likely than dependent assortment
• Linkage is due to crossing over