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प्रश्न
Which of the following statements about DNA replication is not correct?
विकल्प
Unwinding of DNA molecule occurs as hydrogen bonds break.
Replication occurs as each base is paired with another exactly like it.
Process is known as semi conservative replication because one old strand is conserved in the new molecule.
Complementary base pairs are held together with hydrogen bonds.
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उत्तर
Replication occurs as each base is paired with another exactly like it.
Explanation:
DNA replication does not pair identical bases together; instead, it follows the rule of complementary base pairing. This means an Adenine (A) on the original strand always pairs with a Thymine (T) on the new strand, and a Guanine (G) always pairs with a Cytosine (C). The other statements are correct: the double helix must unwind by breaking hydrogen bonds, the process is semiconservative since each new molecule keeps one original strand, and hydrogen bonds are indeed what hold the new base pairs together.
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