Nasal infection flush incident. Molecular Biology Text. Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms and some viruses.
Ribonucleic acid (RNA) is a long chain of nucleotides, similar in structure to one strand of DNA. One difference is that in RNA, thymine is replaced by its less-stable, unmethylated form, uracil. RNA molecules are constructed during a process called transcription. Transcription assembles RNA based on the sequence of bases on a DNA molecule. Each group of three adjacent nucleotides is called a codon and each codon defines a specific amino acid. Natural/homemade.