Which of the following was used by Hershey and Chase to prove that $DNA$ is the chemical basis of heredity
$TMV$
Cauliflower mosaic virus
Dahlia mosaic virus
$T_2$ bacteriophage
Which of the following is false for $RNA$?
$(i)$ $RNA$ can directly code for the synthesis of proteins
$(ii)$ It is very common process to synthesis $DNA$ from $RNA$
$(iii)$ $RNA$ is used as genetic material only in human
$(iv)$ One polynucleotide chain is present in $RNA$
Which of the following is not correct for molecule acting as genetic material ?
During the course of evolution why $DNA$ was chosen over $RNA$ as genetic material ? Give reasons by first discussing the desired criteria in a molecule that can act as genetic material and in the light of biochemical differences between $DNA$ and $RNA$.
Which is the hereditary material in bacteria
Define transformation in Griffith's experiment. Discuss how it helps in the identification of $DNA$ as the genetic material.