Which of the following researchers are correctly matched with their work?
A.Erwin Chargaff --- Demonstrated the assimilation of external DNA into a cell; mixing a heat-killed pathogenic strain of bacteria with a living nonpathogenic strain can convert some of the living cells into the pathogenic form
B.Alfred Hershey and Martha Chase ---- Showed that the DNA, but not the protein, entered the bacterial cells, and was therefore concluded to be the genetic materialE.James Watson and Fredrick Crick --- Determined the structure of DNA, an elegant double-helical model
C.Frederick Griffith --- X-ray diffraction of crystallized DNA, suggested helical structure and diameter
D.Rosalind Franklin --- Analysis of the relative base composition of DNA

B.Alfred Hershey and Martha Chase ---- Showed that the DNA, but not the protein, entered the bacterial cells, and was therefore concluded to be the genetic materialE.James Watson and Fredrick Crick --- Determined the structure of DNA, an elegant double-helical model

Rosalin Franklin - Xray diffraction of crystallized DNA, that is why letter C is incorrect.

Frederic Griffith- Demonstrated the assimilation of external DNA into a cell; mixing a heat-killed pathogenic strain of bacteria with a living nonpathogenic strain can convert some of the living cells into the pathogenic form, that is why letters A and C are incorrect.