DNA and other molecules can be separated based on size and charge using a technique called gel electrophoresis. Digested DNA (DNA cut into various sized fragments using enzymes) is run through agar gel. This gel is a microscopic matrix that traps larger pieces and allows smaller pieces to travel towards the bottom. The DNA is pulled through the gel matrix because of an electric current that runs through the gel. Each fragment leaves a visible band in the gel. Figure 1 shows the band patterns of 4 individuals, A through D.
Figure 1
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Question 1 of 5
1. Question
Question 1:
Based on the passage, it can be concluded that DNA has which of the following charges?
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Question 2 of 5
2. Question
Question 2:
It can be inferred from the information provided and the data presented in Figure 1 that which individuals are most similar?
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Question 3 of 5
3. Question
Question 3:
According to the passage, which individual’s DNA was digested the most by the enzymes?
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Question 4 of 5
4. Question
Question 4:
The experimenter wants to try a new type of gel to run the experiment with. This gel allows all pieces of DNA to travel through towards the bottom. Should the experimenter use this new gel?
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Question 5 of 5
5. Question
Question 5:
Based on the information provided and Figure 1, which of the individuals are least similar?
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