The given figure refers to the process of transcription in Eukaryotes, A,B,C and D are respectively

Options

A. A - RNA polymerase II, B - Intron, C - Exon, D - Poly G tail
B. A - RNA polymerase II, B - Intron, C - Exon, D - Poly A tail
C. A - DNA polymerase II, B - Intron, C - Exon, D - Poly A tail
D. A - RNA polymerase II, B - Exon, C - Intron, D - Poly A tail

Answer

B

Explanation

RNA polymerase II – Synthesis RNA strand
In tron – RNA do not code for protein
Exon – RNA code for protein
Poly A tail – Addition of adenine residues at 3. end.