If the sequence of bases along one side of a DNA
molecule is AAGCT, then the complementary sequence
of bases on the other side of the DNA molecule is
(a) AAGCT
(c) UUCGA
(b) GGTAC
(d) TTCGA
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The complementary sequence of baes on the other side of the DNA molecule is TTCGA.
- There are two types of nitrogen bases:
- Purines - Adenine, Guanine.
- Pyrimidines - Thymine/uracil, cytosine.
- Purines contain two rings made of carbon and nitrogen whereas pyrimidines possess only one ring in the structure.
- Uracil is present in RNA whereas thymine is present in DNA.
- These purines and pyrimidines are complementary in nature.
- Adenine is complimentary with thymine/uracil whereas Guanine is complementary to Cytosine.
- For every adenine base in a DNA strand, the other DNA possesses a Thymine moiety and for guanine, a cytosine moiety is present.
Henceforth, for AAGCT, the complementary sequence is TTCGA.
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