What happens during transcription?

emoji dna GIF by University of California

a
DNA is doubled
b
mRNA is doubled as it copies the genes on both sides of the DNA
c
mRNA is formed by copying a gene on one of the DNA strands
d
amino acids are brought to the mRNA to construct a new strand

c. mRNA is formed by copying a gene on one of the DNA strands

During transcription, RNA polymerase enzyme binds to a specific gene on the DNA molecule and unwinds the DNA helix. The enzyme then reads the gene and creates a complementary messenger RNA (mRNA) molecule by adding RNA nucleotides. This process results in the formation of a single-stranded mRNA molecule that carries the genetic information from the DNA to the ribosomes for protein synthesis.