Choose the one most appropriate answer for each.
-Watson and Crick
A)Discovered that the hereditary system of one strain of bacteria could be transformed by the hereditary system from another strain of bacteria
B)First to describe DNA and extract it from cell nuclei
C)Discovered that DNA-digesting enzymes prevented bacterial transformation
D)The first to build an accurate model of DNA and to describe it explicitly in a publication
E)The first to demonstrate, through the use of radioactive isotopes, that DNA, not protein, is the genetic material
F)Provided two important clues to the structure of DNA; one clue is that A = T and the other is that C = G
G)Worked at King's College at the same time as Franklin
H)Obtained excellent x-ray diffraction photographs that suggested that DNA was a long, thin molecule with regularly repeating units

Question

Quizplus · Accepted Answer

Watson and Crick were the first to build an accurate model of DNA and to describe it explicitly in a publication.

Answer: H
 The excellent x-ray diffraction photographs obtained by Franklin suggested that DNA was a long, thin molecule with regularly repeating units.

Answer: F
 Watson and Crick provided two important clues to the structure of DNA; one clue is that A = T and the other is that C = G.

Answer: G
 Both Watson and Crick worked at King's College at the same time as Franklin.

The other answer choices are not correct:
A) This discovery was made by Griffith.
B) DNA was first described by Friedrich Miescher and first extracted by Phoebus Levene.
C) This discovery was made by Avery, MacLeod, and McCarty.
E) Hershey and Chase were the first to demonstrate this through their experiments with bacteriophages.

Choose the One Most Appropriate Answer for Each