DNA The Easy Way
Believe it or not, the process of completing a DNA test is not very difficult. First of all, human cells must be collected. The cells can be collected from a person's cheek using a swab. The next step is to send this cell sample to a laboratory, where scientists extract the DNA from the swab and create many samples from it. Then the samples are put into a gel mixture, and are subjected to an electric current. A DNA probe can then be used, which attaches itself to the sample. Each person produces a unique location of DNA attachment, and this is how the identification works. Ultimately, scientists develop the film of this unique DNA strand. This type of DNA test becomes more reliable as more probes are used to test the strand. DNA testing has become very popular, so it is now available on the Internet. Ordinary people can now order in-home DNA tests and get their results in just a few days.
Questions:
1) What is the topic of this paragraph?
2) List the nine steps that make up the process of DNA testing.
3) What two transitional words or phrases in "DNA the Easy Way" can you find that have similar meanings to 'first' and 'finally'?
4) Reread the last two sentences in the paragraph. What suprising information is given in these sentences. With what idea do they conclude the paragraph?
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