MHT CET Biology question

The result of the following reaction/experiment carried out by Avery et.al. on Streptococcus pneumoniae has proved conclusively that DNA is the genetic material; [K CET 2014]

(A)Live ‘R’ strain + DNA from ‘S’ strain + RNAase
(B)Live ‘R’ strain + DNA from ‘S’ strain + DNAaseCorrect
(C)Live ‘R’ strain + Denatured DNA of ‘S’ strain + protease
(D)Heat killed ‘R’ strain + DNA from ‘S’ strain + DNAase

Answer: (B)

Solution

When the S-strain DNA is destroyed by DNase, the live R cells are not transformed, showing that DNA is the transforming (genetic) material; with RNase

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-065406