Make a DNA molecule by pairing the DNA strand below with its complementary strand. C-G-A-T-G-A-T-C-C-A-T—T 2. Use the structures in the diagram above in constructing the DNA molecule. 3. Encircle the possible gene in the DNA molecule.
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Make a DNA molecule by pairing the DNA strand below with its complementary strand. C-G-A-T-G-A-T-C-C-A-T—T 2. Use the structures in the diagram above in constructing the DNA molecule. 3. Encircle the possible gene in the DNA molecule.
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Answer:
The rules of base pairing tell us that if we can "read" the sequence of nucleotides on one strand of DNA, we can immediately deduce the complementary sequence on the other strand. The rules of base pairing explain the phenomenon that whatever the amount of adenine (A) in the DNA of an organism, the amount of thymine (T) is the same (called Chargaff's rule). Similarly, whatever the amount of guanine (G), the amount of cytosine (C) is the same. The C+G:A+T ratio varies from organism to organism, particularly among the bacteria, but within the limits of the experimental error, A=T and C=G.