Biology - The Discovery of DNA

Teacher - Dr. McWilliams

A chemical substance from one cell is ___________ another cell.

genetically transforming

Oswald Avery, Colin Macleod, and Maclyn McCarty discovered

DNA stoes and transmits genetic information from one generation of bacteria to the next

Alfred Hersey and Martha Chase

Confirmed DNA is the genetic material, not protein

Rosalind Franklind’s additions to the DNA double helix

1952 - X-ray photo of DNA

Watson and Crick’s additions to the DNA double helix

1953 - describes the DNA molecule from Franklin’s X-ray

Parts of DNA nucletide

a nitrogenous base (like adenine, thymine, cytosine, or guanine), a deoxyribose sugar molecule, and a phosphate group

Adenine combines with

thymine

Guanine pairs with

cytosine

Chargaff’s rule

DNA, the amount of adenine (A) equals the amount of thymine (T), and the amount of guanine (G) equals the amount of cytosine (C)

True of False: Many experiments were done in the effort to rule out that proteins effected genetics

true