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From HHMI. A lesson that requires students to work through a series of questions pertaining to the genetics of sickle cell disease and its relationship to malaria. These questions will probe students' understanding of Mendelian genetics, probability, pedigree analysis, and chi-square statistics.

HHMI's biointeractive: short video explaining Chargaff's ratios

From HHMI. In the second film of the Great Transitions trilogy, paleontologist Julia Clarke takes us on a journey to uncover the evidence that birds descended from dinosaurs.

Welcome to the Virtual Cardiology Lab. The focus of this lab is on heritable diseases of the heart. You are cast here as a virtual intern to accompany a doctor examining three different patients. Each patient is examined, using more than one diagnostic tool, and at each stage, the doctor will invite you to examine the patient yourself and ask for your opinion.

19 video Which traits distinguish humans from other primates? When and where did these traits evolve? Discover the latest findings on hominid evolution in this classroom-ready biology video.

Students explore the genetic changes associated with lactose tolerance/intolerance and how the trait is inherited in families.