Watson & Crick
DNA
Transformation
Scientific Inquiry
100
The month and year that Watson and Crick released their model of DNA
What is April 1953?
100
DNA and this became known as the two chemical components of chromosomes.
What is protein?
100
These viruses are widely used in molecular genetics research.
What is bacteriophage?
100
She used X-Ray crystallography to photograph DNA that allowed Watson and Crick to determine the structure of DNA.
Who is Rosalind Franklin?
200
This is Mr. Watson's First Name.
Who is James?
200
The role of DNA in heredity was first discovered by studying this organism and the viruses that infect them.
What is bacteria?
200
In 1952, scientists performed experiments showing that DNA is the genetic material of a phage known as this.
What is T2?
200
The discovery of the genetic role of DNA began with research by him in 1928 when he worked with two strains of a bacterium, one pathogenic and one harmless.
Who is Frederick Griffith?
300
Watson built a model in which the backbones were, this, meaning their subunits run in opposite directions
What is antiparallel?
300
pairing a purine with this base resulted in a uniform width consistent with the X-ray data.
What is pyrimidine?
300
Scientist designed an experiment showing that only one of the two components of T2 (DNA or protein) enters this type of cell during infection.
What is E. Coli?
300
These two scientists used radioactive sulfur and phosphorus to trace protein and DNA inside bacterial cells.
Who are Alfred Hershey and Martha Chase?
400
The Watson-Crick model explains the rule that states in any organism the amount of A = T, and the amount of G = C.
What is Chargaff's Rule?
400
These two bases make up the purines in the DNA molecule.
What are adenine and guanine?
400
These two scientists used radioactive sulfur and this element to trace protein and DNA inside bacterial cells.
What is phosphorus?
400
In 1950, reported that DNA composition varies from one species to the next and his evidence of diversity made DNA a more credible candidate for the genetic material.
Who is Erwin Chargaff?
500
This model, proposed by Watson and Crick predicts that when a double helix replicates, each daughter molecule will have one old strand and one newly made strand.
What is semiconservative model?
500
DNA is its acronym.
What is deoxyribonucleic acid?
500
Frederick Griffin studied two strains of this bacterium to test for the trait of pathogenicity in mice.
What is streptococcus pneumonia?
500
In 1944, they announced that the transforming substance was DNA.
Who are Oswald Avery, Maclyn McCarty, and Colin MacLeod?