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DNA: The Thread Of Life
Beginning of essay
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. T ....
Middle of essay
....ng human genes at the rate of more than one a day. This may
not sound like very much but as technology increases the rate at finding them
will increase. Since January 1993 to January 1994 scientists have located the
genes for Huntington's disease, Lou Gehrig's disease, and the "bubble-boy"
disease. Scientists are expected to find the first breast cancer gene any week
now.
Even with the best tools of today, the progress is full of surprises.
Human DNA is not like that of plants, in which the .... |
| Number of words: 692 |
Approximate pages: 3 |
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