dna and rna chapter 12 - Chapters
DNA and ribonucleic acid (RNA) are nucleic acids. Alongside proteins, lipids and complex carbohydrates (polysaccharides), nucleic acids are one of the four major types of macromolecules that are essential for all known forms of life. There are two types of nucleic acids: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).
Understanding the Context
Each of these molecules has a unique structure that enables it to fulfill specific functions within the cell. Understanding the structure of DNA and RNA is key to grasping how genetic information is encoded, replicated, and expressed within an organism. DNA is an organic chemical of complex molecular structure found in all prokaryotic and eukaryotic cells. It codes genetic information for the transmission of inherited traits.
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Key Insights
Deoxyribonucleic acid (abbreviated DNA) is the molecule that carries genetic information for the development and functioning of an organism. DNA is made of two linked strands that wind around each other to resemble a twisted ladder — a shape known as a double helix. DNA is the hereditary material in humans and almost all other organisms. Genes are made up of DNA. DNA (deoxyribonucleic acid) is a set of instructions for creating the proteins that make your body work.
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Two strands of DNA together form into a double helix. Deoxyribonucleic acid (DNA) is the heredity material found in humans and all living organisms. It is a double-stranded molecule and has a unique twisted helical structure. AncestryDNA is a cutting edge DNA testing service that utilizes some of the latest autosomal testing technology, our patented Genetic Communities and SideView technologies, and the largest consumer DNA database to revolutionize the way you discover your family history.