what is DNA?

Answer 1

DNA(deoxyribonucleic Acid) is the genetic material. Genes are DNA.Genes have blue prints for proteins.In other words, they have in them sets of three nucleotides(units) that constitute the genetic code for a particular amino acid.

Answer 2

DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).

The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T). Human DNA consists of about 3 billion bases, and more than 99 percent of those bases are the same in all people. The order, or sequence, of these bases determines the information available for building and maintaining an organism, similar to the way in which letters of the alphabet appear in a certain order to form words and sentences.

DNA bases pair up with each other, A with T and C with G, to form units called base pairs. Each base is also attached to a sugar molecule and a phosphate molecule. Together, a base, sugar, and phosphate are called a nucleotide. Nucleotides are arranged in two long strands that form a spiral called a double helix. The structure of the double helix is somewhat like a ladder, with the base pairs forming the ladder’s rungs and the sugar and phosphate molecules forming the vertical sidepieces of the ladder.

An important property of DNA is that it can replicate, or make copies of itself. Each strand of DNA in the double helix can serve as a pattern for duplicating the sequence of bases. This is critical when cells divide because each new cell needs to have an exact copy of the DNA present in the old cell.

Answer 3

It is short form for Deoxyribonucleic acid.
It carries all the information needed to generate substances especially proteins in the different combinations of four different substances Adenosine(A), thymine(T), cytosine(C) and guanine(G). These four are called bases. These four units or building blocks are further divided into 2 groups. So that one base can pair with another for other group just like a lock and key mechanism.

These long chains of these four bases are pairs with an complementary base pair chain (by complimentary I mean the position in the second chain must contain the key for base in first chain so that each lock and has specific key ).
the chains are several thousands and millions pair long.
Several tens, or hundreds or thousand in a double chains of bases are responsible for certain proteins. They are called genes.

Now that we have two long chains and each unit is joined to form a pair it generates a laddar like structure. This ladder is twisted in a sprial shape. Just like we have spiral laddars in tall buildings.

Finally all the spiral shape is put into a thick protein layer to make chromosomes.

Answer 4

DNA stands for:
Deoxyribonucleic acid.

DNA is:
Our genetic makeup.

And looks like:
http://en.wikipedia.org/wiki/Image:DNA_Overview.png

Answer 5

a nucleic acid shaped like a double helix
Contains genetic information

Answer 6

it is deoxyribonucleic acid its present in condensed form in the chromosomes in the nuclei of cells

Answer 7

The depth of Paul A. Schum's fear as he stands trial.
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Answer 8

http://en.wikipedia.org/wiki/DNA

Answer 9

http://en.wikipedia.org/wiki/DNA

Answer 10

deoxyribonucleic acid- our genetic makeup