What is the difference between transcription and DNA replication?
In DNA replication, the double strands of DNA are split and a complimentary DNA strand is created for each of the original strands. The result is two identical strands of DNA. In DNA transcription, the two strands are pulled apart and a complimentary RNA strand of a section of the DNA is made. After the complimentary RNA strand is made, the original DNA is reconnected and the RNA strand (specifically, a strand of mRNA) separates and leaves the nucleus. One of the main differences between DNA and RNA is that uracil (U) replaces the thymine (T). In summary, replication makes two identical strands of DNA and transcription makes a (relatively) short strand of mRNA.