The information in DNA is stored in a sequence of bases or nucleotides. The sequence of the bases are the basis for the information code. Unlike digital code which is comprised of 0s and 1s, (such as: 01100011100) the chemical units of information in DNA are:

Nitrogenous Bases.

Explanation:

Adenine, Thymine, Guanine and Cytosine are the four number of nitrogenous bases that are found in DNA. These are the chemical units which form DNA and further their specific sequences become the unit of heredity which is called gene. All the information that lies in DNA is due to the different sequence of these nitrogenous bases. These bases are arranged in different manner in the DNA. Some long or short sequences of the bases are specific and perform specific functions in our body. These are the genes.

typically, most spiders possess eight eyes. however, others have as many as 12, and some don't have any. these eyes are for detecting light from dark, deciphering shapes and for gathering their prey.