Transcription .a. synthesizes new daughter DNA molecules from an existing DNA molecule;b. results in the synthesis of an RNA copy of a gene;c. pairs thymines (T) with adenines (A);d. occurs on ribosomes

Transcription is the biological process where the information in a gene's DNA is copied into messenger RNA (mRNA). This process occurs in the nucleus of eukaryotic cells and is essential for gene expression, allowing the genetic code to be translated into proteins.

During transcription, RNA polymerase synthesizes a single strand of RNA by pairing complementary RNA nucleotides with the DNA template strand. This results in the formation of an RNA copy of the gene, which can then be translated into a protein.

In transcription, the base pairing rules dictate that adenine (A) in the DNA pairs with uracil (U) in RNA, while cytosine (C) pairs with guanine (G). This is crucial for ensuring the accurate transfer of genetic information from DNA to RNA.