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National Institute of Educational Technologies and Teacher Training (Spain)
Ministerio De Educacion: La Base De La Herencia 2 Bachillerato
This unit discusses the following topics: cloning, transgenic, gene therapy, genetic code, human genome and DNA replication. It contains 19 interactive activities.
Cold Spring Harbor Laboratory
Dna From the Beginning: Mutations Are Changes in Genetic Information
This article explains how and why mutations are so important to genetics.
PBS
Pbs Learning Media: Molecular Clocks: Proteins That Evolve at Different Rates
In this graphic and article from "The Human Evolution Coloring Book" by Adrienne Zihlman, four different proteins from humans and horses are compared and the reasons each protein evolves at its own characteristic rate are discussed.