In IB Biology SL D1.2.1, transcription produces mRNA as a mobile copy of gene information. RNA polymerase builds an RNA strand complementary to the DNA template.
Mitosis produces genetically identical cells, which become specialized by expressing specific genes. This ensures that tissues and organs are adapted to their functions.
Describe how mRNA is produced in the nucleus.
a. RNA polymerase unwinds/unzips DNA / breaks hydrogen bonds;
b. (DNA) template/antisense strand is used;
c. free RNA nucleotides are added to the growing RNA strand using the DNA template;
d. (by) complementary base pairing / A-U AND G-C;
e. RNA polymerase joins/attaches (RNA) nucleotides (on new mRNA strand)/forms (phosphodiester) bonds;
f. RNA polymerase/mRNA strand detaches/DNA strands reattach OR
transcription terminates at a transcription termination region/signalled endpoint, not at a translation stop codon;