The “thread of life”, is deoxyribonucleic acid, otherwise known as DNA. It is the spiral

Shaped molecule found in the nucleus of cells. Scientists have known since 1952 that

DNA is the basic substance of heredity. This was hypothesized, and later confirmed by

James D. Watson and Francis Crick. They also know that it acts like a biological

computer program over 3 billion bits long that “spells” out instructions for making the

DNA carries the bodies genetic code, controls the development of an embryo, is capable

Of duplicating itself, and is able to repair damage to itself. DNA can be manipulated to

Change all kinds of things. All DNA molecules consist of a linked series of unites called

nucleotides. Each DNA nucleotide is composed of 3 subunits: a 5 carbon sugar called

deoxyribose, a phosphate group that is joined to one end of the sugar molecule, and one

of several different nitrogenous bases linked to the opposite end of the deoxyribose.

There are 4 nitrogen bases called adenine, guanine, thymine, and cytosine. In DNA

Adenine pairs with thymine and guanine with cytosine.

scientists through the DNA, scientists are finding human genes at the rate of more than

to amaze the scientific community or the general public. Going back to the infamous O.J. trial, at that particular crime scene so much blood as well as DNA evidence was

in a protein synthesis. DNA is damaged by exposure to ultraviolet (UV) light. The DNA

Scientists are expected to find the first breast cancer gene any week now. Even with the

certain samples from that scene and compare with the victims blood and the accused.

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