Picaridin can be used on human skin or clothing to repel mosquitoes, biting flies, ticks, fleas, and chiggers. These products may be pump sprays, liquids, aerosols, or wipes.
Transcription is carried out by a DNA-dependent RNA polymerase that copies the sequence of a DNA strand into RNA. To begin transcribing a gene, the RNA polymerase binds to a sequence of DNA called a promoter and separates the DNA strands.
Transcription is the name given to the process where the information in a gene in a DNA strand is transferred to an RNA molecule. The important thing to realise is that the genetic information is carried on only one of the two strands of the DNA. This is known as the coding strand.