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It is commonly referred to as the gene for baldness or the gene for blue eyes. In 1953, James Watson and Francis Crick established the structure of DNA. The shape of DNA is a double helix, which is like a twisted ladder. The sides of the ladder are made of alternating sugar and phosphate molecules. The sugar is deoxyribose. Color all the phosphates red (labeled with a p).
Watson-Crick has discovered the current-structure of DNA in 1953.The famous double-helix structure of DNA has its own significance. There are basically four nucleotide bases, which make up the DNA. Adenine (A), Guanine (G), Thymine (T) and Cytosine(C). A DNA sequence looks some thing like this ATTGCTGAAGGTGCGG. DNA is measured according to the number of base pairs it consists of, usually in kBp or mBp(Kilo/Mega base pairs).