What nucleotide base is part of the product of transcription that is not part of dna? what does it replace in dna?

During transcription, the replication of DNA uses RNA to copy the DNA components. Uracil is the replaced nucleotide for Thymine during this phase of protein synthesis.  Thank you for your question. Please don't hesitate to ask in your queries. 

Three alkali metals in group 1 are calcium, strontium, bariumboron, aluminum, galliumsodium, potassium, rubidiumfluorine, iodine, chlorine