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What is DNA?

Updated: 4/27/2022
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Wiki User

6y ago

Verified answer

A nucleic acid

apex

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Jasmin Garcia

Lvl 2
2y ago
This answer is:
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Zelda Heidenreich

Lvl 1
2y ago
How did you get that answer
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Aurelia Stracke

Lvl 1
2y ago
Where did you get your answer?
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Necryption

Lvl 1
2y ago
why are you asking where they got their answer? you can literally just look it up, its correct
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Ambrosia Jones

Lvl 1
1y ago
thank you
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deniskyalo28

Lvl 1
1y ago
Deoxyribonucleic acid
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Mitu

Lvl 1
1y ago
DNA is a cell that contains genetic information responsible for the function of an organism.
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Elza Olson

Lvl 13
2y ago

DNA hybridisation is where DNA is compared from different species to determine how closely species are related

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Wiki User

6y ago

Deoxyribonucleic Acid DNA is a nucleic acid polymer consisting of two long backbones, with nitrogenous bases connecting them (imagine a ladder). This structure is then twisted into a double helix.

The two back bones are composed of a pentose sugar (namely deoxyribose) with the nitrogenous bases facing inwards and connected to each other via hydrogen bonding. The sugars are in turn connected together by phosphate groups with phosphodiester bonds.

The function of DNA is long-term information storage. A brief synopsis is that DNA is used as a template to make mRNA (transcription) which directs the assembly of a protein in a ribosome (translation).

DNA must be replicated during cell reproduction, as each daughter cell resulting in mitosis will require a full genome. DNA replication is a nearly exact process, with error rates less than one-in-a-billion. This is due to the nitrogenous bases, which is where the information is stored. Four bases exist in DNA: adenine, guanine, cytosine and thymine (A,T,C and G). Remember the two legs of a ladder running anti-parallel to each other, with bases facing inwards. Each base is connected to the one across from it via relatively weak hydrogen bonding. This bonding however, allows the DNA to be replicated with remarkable exactness as A can only bond with T and C can only bond with G. As such, when DNA Polymerase enzymes polymerize a new strand of DNA, they "know" which order to put the bases in, thus conserving information. This is known as the "semi-conservative" model of DNA Replication.

Definition:

The official definition of the word DNA is "deoxyribonucleic acid, a self-replicating material present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information."

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s0fia

Lvl 2
3y ago

Is a molecule composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses.

Hope it helps ^^

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Wiki User

10y ago

DNA stands for Deoxyribonucleic acid. DNA are molecules that carry genetic information in living organisms to include humans and animals.

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malachi timothy

Lvl 3
2y ago

Dna Is genetic/traits passed down from one person to another for

eg. Brown hair-Dna , Blue Eyes-Dna, Red skin-Dna.

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