Which $RNA$ is having least age
$m\ RNA$
$t\ RNA$
$r\ RNA$
None of the above
Assertion : The uptake of $DNA$ during transformation is an active, energy requiring process.
Reason : Transformation occurs in only those bacteria, which possess the enzymatic machinery involved in the active uptake and recombination
Exchange of chromosome segments between maternal and paternal chromatids during synapsis in meiosis is called
Which of the following is not required during post transcriptional processing in eukaryotes?
Which of the following bond is not present in $DNA$?
$tRNA$ is composed of about how many nucleotides