Enzyme aminoacyl synthetase is responsible for
Initiating $mRNA$ synthesis
Charging $tRNA$ molecules
Combining $tRNA$ at $P$ site of $mRNA$
None of the above
Chromosome having centromere in its middle is
A normal spontaneous rate for a single gene is one mutation in every……replication
Which type of $RNA$ is most abundant in cell
Which of the following is genetically inert and does not transcribe messenger $RNA$ for protein synthesis
The genes, which are confined to differential region of $Y$ chromosome only, are called