77. Which of the following statements about the scientists and their contributions to the discovery of DNA as a geneticmaterial as well as DNA's structure and function is NOT CORRECT?
(A) Frederick Griffith's study on two strains of Streptococus pneumonia led to the discovery that DNA is a geneticmaterial.
(B) Alfred Hershey and Martha Chase's studies of the virus that infects bacteria provided experimental evidence that DNA,but not protein, is the genetic material of virus.
(C) Erwin Chargaff reported that the base composition of DNA varies between species, providing additional evidence thatDNA is a genetic material.
(D) Rosalind Franklin produced the first X-ray diffraction image of DNA.
(E) James Watson and Francis Crick built the first double-helix model of DNA.(本題送分)