Khan Academy
Khan Academy: Mendelian Inheritance of Immunodeficiency Disorders
Read this passage and study the graphics to complete the five-question quiz concerning the inheritance of immunodeficiency disorders.
PBS
Pbs Teachers: Nordic Sagas: Iceland Genes
Explain how the isolated and homegeneous population of Iceland makes research in family ancestry simpler than in other cultures. Investigate the work of genealogists, and trace your own heritage as far as you can without extensive research.