Khan Academy
Khan Academy: Protein Targeting
Learn how molecular labels are used to direct proteins to different parts of the cell and to the cell exterior.
Cold Spring Harbor Laboratory
Dna From the Beginning: Some Dna Can Jump
This article contains information on how DNA is repaired to prevent mutated damage from interrupting DNA processes.
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.