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What is DNA an RNA ?

Re: What is DNA an RNA ?

DNA, which stands for deoxyribonucleic acid, is the long-chain molecule that contains the genetic material (encoded hereditary characteristics)in living organisms.
RNA, which stands for ribonucleic acid, is also a long-chain molecule.
The function of RNA is to translate the genetic material stored in DNA, into protein structures. RNA essentially carries out the instructions of DNA.


DNA is a type of complex acid, called a nucleic acid, made of a repeating pattern of simple building blocks called nucleotides. Each nucleotide consists of a phosphate (PO4), a sugar (deoxyribose), and a base which is either adenine (A), thymine (T), guanine (G), or cytosine (C). In a DNA molecule, nucleotides exist as two spiral strands linked at their bases (either between A and T or between G and C). This structure, which resembles a twisted ladder, is known as a double helix.

The double-helix structure of DNA was discovered by James Watson (1928-), Francis Crick (1916-), and Maurice Wilkins (1916-). Their discovery earned them the 1962 Nobel Prize in physiology or medicine.

RNA is also a nucleic acid. It differs from DNA in that it consists of a single chain of nucleotides. Another difference is that the sugar in RNA is ribose instead of deoxyribose found in DNA.

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Re: What is DNA an RNA ?

Al;l great news to hear the full facts and the difference thankyou.

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DNA: A nucleic acid that carries the genetic information in the cell and is capable of self-replication and synthesis of RNA. DNA consists of two long chains of nucleotides twisted into a double helix and joined by hydrogen bonds between the complementary bases adenine and thymine or cytosine and guanine. The sequence of nucleotides determines individual hereditary characteristics.

RNA: A polymeric constituent of all living cells and many viruses, consisting of a long, usually single-stranded chain of alternating phosphate and ribose units with the bases adenine, guanine, cytosine, and uracil bonded to the ribose. RNA molecules are involved in protein synthesis and sometimes in the transmission of genetic information.

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Re: What is DNA an RNA ?

The main difference between DNA and RNA is the sugar present in the molecules. While the sugar present in a RNA molecule is ribose, the sugar present in a molecule of DNA is deoxyribose. Deoxyribose is the same as ribose, except that the former has one more OH.

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Re: What is DNA an RNA ?

DNA is a double helix structure of RNA is a single-helix structure.

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DNA: Deoxyribonucleic acid. The double-stranded chemical instruction manual for everything a plant or animal does: grow, divide, even when and how to die. Very stable, has error detection and repair mechanisms. Stays in the cell nucleus. Can make good copies of itself.

RNA: Ribonucleic acid. Single-stranded where DNA is double-stranded, messenger RNA carries single pages of instructions out of the nucleus to places they're needed throughout the cell. No error detection or repair; makes flawed copies of itself. Evolves ten times faster than DNA. Transfer RNA helps translate the mRNA message into chains of amino acids in the ribosomes.

For More Information you can see this url : http://www.postmodern.com/~jka/rnaworld/rna/rnadefed.html

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