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[Exhibition guide number:2801]
DNA in All Organisms
All organisms ranging from bacteria to human beings have in common the material known as DNA. DNA is composed of four base types, adenine, guanine, cytosine and thymine. According to the base sequence various proteins are produced to form the materials of an organism's body. DNA is precisely inherited from parent to their offspring. Likewise organisms are formed based on the DNA, which is regarded as their design, allowing encoding of genetic instructions in their offspring.