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00043_Field_SRC.p36.A.1.txt
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1997-02-04
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Advances in Cancer Genetics
Christopher Benz, MD, Ernest H. Rosenbaum, MD, and Malin Dollinger, MD
Each cell in our bodies contains all of our genetic information in 46 chromosomes , 23 inherited from
each parent. Each chromosome contains many thousands of genes, small subdivisions of the
material that is the blueprint of life, DNA.
Genes are the carriers of genetic knowledge. A
gene is capable of transmitting a single
characteristic such as eye color from parent to
offspring. There are an estimated 50,000 to
100,000 genes within a human cell. Only about
100 of them are known to regulate cell growth and division.
First proposed about 80 years ago, it is now well proven that one of the causes of cancer is changes or