EVERYDAY SCIENCE

Detailed explanation-1: -The enzyme RNA polymerase, or RNAP, which has several forms, is responsible for elongating the RNA chain during the transcription of DNA.

Detailed explanation-2: -During elongation, RNA polymerase “walks” along one strand of DNA, known as the template strand, in the 3’ to 5’ direction. For each nucleotide in the template, RNA polymerase adds a matching (complementary) RNA nucleotide to the 3’ end of the RNA strand.

Detailed explanation-3: -Because RNA polymerase II is responsible for the synthesis of mRNA from protein-coding genes, it has been the focus of most studies of transcription in eukaryotes.

Detailed explanation-4: -RNA polymerase (RNApol) is a multi-unit enzyme that is responsible for creating a complimentary strand of nucleic acid, called RNA, from a single stranded DNA template through the incorporation of adenosine, cytosine, guanine and uracil nucleotides.

Detailed explanation-5: -This complex initiates transcription, and the RNA polymerase begins mRNA synthesis by matching complementary bases to the original DNA strand. The mRNA molecule is elongated and, once the strand is completely synthesized, transcription is terminated.