Question

Which of the following is not one of Griffith's conclusions about hereditary material?

		It must be reproduced faithfully
		It must be able to code for a phenotype
		It must not have variation
		It must carry information

Answer 1

Frederick Griffith was a British bacteriologist, whose focus was the pathology and epidemiology of bacterial pneumonia. Griffith conducted experiments on Streptococcus pneumoniae and mice. As result of his experiment, he identified that some hereditary material can able to transform from the virulent cells (S cells) to the nonvirulent cells (R cells). So he concluded that hereditary material (DNA) must be reproduced faithfully, not have variation and carry information. But he did not conclude that hereditary material must be able to code for a phenotype. So, from the given options, hereditary material must be able to code for a phenotype is not present in Griffith's conclusions.