Dna 3

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allow more of it to fit into a compact space. This helix replicates and passes on its information to the body's cells.
In humans, all the DNA is packaged into 46 separate molecules called "chromosomes." The chromosomes each contain thousands of genes, with each gene specifying how to make a particular protein necessary for cellular function. Scientists have long thought that the key to understanding human life lies in knowing the entire sequence of human DNA. Let's take a look at some of the things that people are able to do with or to DNA, as well as the things still in the realm of science fiction. From a variety of applications of knowledge about DNA, I will talk only about three: Cloning, Genetic engineering and DNA Fingerprinting
The idea of cloning has been considered since before the discovery of DNA. Cloning may give us insights into what makes us individuals, and how much of our personality and behavior is based on our genetics. It may also destroy our sense of ...

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cell, and use it to grow another adult. In this way, he theorized, he would be able to prove that no geneticmaterial was lost as cells grew and divided.
2. New Advances
There were no major advances in cloning until November of 1951, when a team of scientists in Philadelphia working at the lab of Robert Briggs cloned a frog embryo. This team did not simply break off a cell from an embryo, however. They took the nucleus out of a frog embryo cell and used it to replace the nucleus of an unfertilized frog egg cell, completing the "fantastical experiment" of nearly 50 years before. Once the egg cell detected that it had a full set of chromosomes, it began to divide and grow. This was the ...

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