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Gregor Mendel

Father of genetics - traits were alleles

Frederick Griffith

Transforming principal - a chemical compoonet from one cell is capable of genetically transforming another cell

Hershey and Chase experiment

DNA is the genetic material of the cell

Erwin Chargaff

levels of adenine equals thymine and guanine with cytosine

Rosalind Franklin

DNA is helical, 2 strands

Watson and Crick

Double stranded helix, uniform diameter, and twist right handed

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