Which occurs during transcription?

O DNA is copied to create a second DNA strand.

O mRNA codons and tRNA anticodons assemble amino acids.

O DNA is unzipped with the aid of DNA polymerase.

O mRNA is synthesized from a strand of DNA.

mRNA is synthesized from a strand of DNA.

Explanation:

Think about it this way: transcription is like taking two similar things (RNA and DNA) and making just a transcript. Not a big change. Translation is like taking two dissimilar things (RNA and protein) and completely translating them, like two different languages.

Transcription is when mRNA is made from DNA. Remember the central dogma: DNA->RNA->protein.