During infection of $\mathrm{E}$. coli cells by bacteriophage $T2$,

$A$ : Wobbling reduces the number of $tRNAs$ required for polypeptide synthesis.
$R$ : It increases the effect of code degeneracy

If a certain group of cells utilise the amino acid glycine exclusively for protein synthesis, and if a growing culture of these cells is fed radioactive glycine, radioactivity will be found first in the

During $DNA$ replication, Okazaki fragments areused to elongate

Genes of interest can be selected from a genomic library by using