The process by which $DNA$ of the nucleus passes genetic information to $mRNA$ is known as:

What will be the sequence of $mRNA$ produced by the following stretch of $DNA$?
$3' ATGCATGCATGCATG 5'$ $TEMPLATE$ $STRAND$
$5' TACGTACGTACGTAC 3'$ $CODING$ $STRAND$

Which of the following statements are correct with reference to a transcription unit?
$A$. $A$ transcription unit in $DNA$ is defined primarily by three regions: promoter,structural gene and terminator.
$B$. The promoter is said to be located towards the $5'$-end of the structural gene.
$C$. The promoter is a $DNA$ sequence that provides binding site for $RNA$ polymerase.
$D$. The promoter defines the template and coding strands.
$E$. The terminator is located towards the $3'$-end of the coding strand and it defines the end of the process of transcription.
Choose the correct answer from the options given below:

What is the sequence of mRNA if the sequence of the coding strand in a transcription unit is written as $5'-ATGCATGCA-3'$?

What is the process of removing introns and joining exons in a defined order during transcription called?

Identify the enzyme that helps in unwinding the $DNA$ helix during transcription.