Does the human body evolve as quickly as human culture? With a stellar 15-minute video, explore the trait of lactose intolerance. Only about 1/3 of human adults seem to still have the enzyme lactase and therefore, the ability to digest...

Seventh graders discuss traits, traits that are inherited and how genes and chromosomes carry the code for traits. They research genetic disorders and their link to chromosome abnormalites and write a report on their findings. which...

Students research and complete activities about dogs. In this dog lesson, students read information about dogs to examine their traits, behavior, language, characteristics, and genetics. Students take a quiz about the information.