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.
The Proportion of the DNA That Codes for Genes. 12 Introns and Exons â¢ Portions of the mRNA are removed before translation. Mutations â¢ Point Mutation â change in a single nucleotide of the DNA sequence. â¢ Insertions and Deletions â changes one or more nucleotides in the DNA sequence.he Proportion of the DNA That Codes for Genes. 12 Introns and Exons â¢ Portions of the mRNA are removed before translation. Mutations â¢ Point Mutation â change in a single nucleotide of the DNA sequence. â¢ Insertions and Deletions â changes one or more nucleotides in the DNA sequence.