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University of Missouri
University of Missouri: Biotech Adventure: Dna Structure
DNA Helix, DNA structure, DNA bases, Nucleotides, strands of DNA, Bonding in DNA, and bonding between bases are the topics delved into in this thorough site.
PBS
Pbs People and Discoveries: Rosalind Franklin
PBS People and Discoveries offers an excellent, if brief, sketch of Rosalind Franklin's character and life.
Houghton Mifflin Harcourt
Harcourt: Biographies: Rosalind Franklin
This is a fantastic biography of Rosalind Franklin. It has links to both additional information and images to help illustrate the biography.
Mocomi & Anibrain Digital Technologies
Mocomi: What Is a Chromosome?
Defines chromosomes, what they are made of, their structure, different types, and chromatids.