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DNA
Beginning of essay
Deoxyribonucleic acid and ribonucleic acid are two chemical substances involved
in transmitting genetic information from parent to offspring. It was known early
into the 20th century that chromosomes, the genetic material of cells, contained
. In 1944, Oswald T. Avery, Colin M. MacLeod, and Maclyn ....
Middle of essay
....ains that are
twisted together into a coil, forming a double helix. Watson and Crick also
discovered that in a double helix, the pairing between bases of the two chains
is highly specific. Adenine is always linked to thymine by two hydrogen bonds,
and guanine is always linked to cytosine by three hydrogen bonds. This is known
as base pairing. (Miller, 143)
The DNA of an organism provides two main functions. The first function is to
provide for protein synthesis, allowing growth and development .... |
| Number of words: 1416 |
Approximate pages: 6 |
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