Which of the following is incorrect for Heryshey - chase experiment ?
Infection
Blending
Centrifugation
$PCR$
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 $RNA$
Explain the role of scientist :
$1.$ Francis Crick
$2.$ Friedrich griphith $(1928)$
Genes are
Chemically $DNA$ differs from $RNA$ in having
Give differences : $DNA$ and $RNA$