Cold Spring Harbor Laboratory
Dna From the Beginning: Dna Is Shaped Like a Twisted Ladder
A nice tutorial on DNA structure. The menu at the bottom allows you to view some different information.
Cold Spring Harbor Laboratory
Dna From the Beginning: Dna and Proteins
Explore the convept that DNA and proteins are key molecules of the cell nucleus.
Concord Consortium
Concord Consortium: How Do Cells Make Proteins?
Learn how the code on a strand of DNA can be used to make a protein.