New phylogenomic tools have made it possible to construct a robust phylogenetic tree of mollusks. This tree can be used to teach important evolutionary principles.

The Y chromosome is of great interest to students and can be used to teach about many important biological concepts in addition to sex determination. This paper discusses mutation, recombination, mammalian sex determination, sex determination in general, and the evolution of sex determination in mammals. It includes a student activity that…

Describes what can be learned from animal dissections and asserts that models and videos cannot substitute for dissections. (PR)