DNA

                      

Hello everbody its thebestscienceblog12 here and today I will be talking about DNA. DNA stands for deoxyribonucleic acid. DNA is important because it determines your eye color, the sizes of your ears, or whether or not you will develope a certain disease.

DNA looks like a twisting and turning ladder. The rungs of the ladder are made up of hydrogen bases. The bases are Guanine, Cytosine, Thymine,and Adenine. The bases can only pair up with specific other bases. The Adenine can only pair with the Thymine and the Guanine can only pair with the Cytosine. The sides of the ladder are made of phosphates and sugar.

James Watson, Francis Crick, and Rosalind Franklin were all great contributor in DNA. They figured out that DNA looks like a double helix on a x-ray.

When DNA is being copied it splits directly down the middle. New halves on the inner side form. After that they connect with the old pieces of DNA and form two new pieces of DNA.

DNA is also used at crime scenes to figure out who committed crimes. They do  this because no two people have the same DNA except for identical twins.














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