Question

which process is part of transcription?
dna is copied to create a second dna strand.
mrna codons and trna anticodons assemble amino acids.
dna is unzipped with the aid of dna polymerase.
mrna is synthesized from a strand of dna.

Explanation:

Transcription is the process where mRNA is synthesized using a DNA strand as a template. DNA replication is when DNA is copied to create a second DNA strand. The assembly of amino - acids by mRNA codons and tRNA anticodons is translation. DNA is unzipped by helicase, not DNA polymerase during replication and transcription.

Answer:

mRNA is synthesized from a strand of DNA.