History/Discover of DNA + Structure

Hershey & Chase

The Hershey and Chase experiment (1952) showed that DNA, not protein, is the genetic material by demonstrating that only DNA from bacteriophages entered and directed the production of new viruses in infected bacteria.

Watson & Crick

Watson and Crick discovered the double-helix structure of DNA in 1953, revealing how genetic information is stored and replicated.

Rosalind Frank

Rosalind Franklin produced critical X-ray diffraction images of DNA, notably Photo 51, which provided key evidence for its double-helix structure.

Erwin Chargaff

Erwin Chargaff discovered that in DNA the amounts of adenine equal thymine and cytosine equal guanine, forming the basis of Chargaff’s rules for base pairing.

Avery, MacLeod, and McCarty

Avery, MacLeod, and McCarty (1944) showed DNA carries hereditary information

Charpentier and Doudna

Charpentier and Doudna developed the CRISPR-Cas9 which can edit and modify genes

DNA

Deoxyribonucleic acid

3 Parts of a Nucleotide

Phosphate, 5-carbon sugar, nitrogenous base

Two Words to Describe the Shape of a DNA molecule

Double Helix

List the two parts of a nucleotide that make up the sides of a DNA molecule

Deoxyribose sugar and the phosphate gropu

Name the part of a nucleotide that makes up the center of a DNA molecule

Nitrogenous base

Base Pairing rules

Adenine = Thymine

Cytosine = Guanine