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प्रश्न
Which of the following statements about DNA replication is not correct?
पर्याय
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.
संबंधित प्रश्न
Semiconservative mechanism of DNA was detected using:
What is the function of SSBP?
Meselson and Stahl’s experiment proved ______.
Identify the direction of DNA replication in eukaryotes.
During DNA replication, Okazaki fragments are used to elongate ____________.
______ heavy isotope was used by Meselson and Stahl during their experiment.
Enzyme ______ brings about the DNA unwinding by breaking weak hydrogen bonds in the vicinity of origin.
Identify the CORRECT combination of statements with respect to DNA synthesis.
I. Always the direction of DNA polymerization 5' → 3' when referring to the polarity of strand being synthesized.
II. DNA ligase forms hydrogen bonds between two newly synthesized DNA strands.
III. DNA polymerases on their own cannot initiate the process of replication.
IV. DNA polymerase can catalyse polymerization in both 5'→ 3' and 3'→ 5' direction.
Which of the following is present at the sticky ends of a fragmented DNA molecule?
Read the following statements and select the correct option.
Statement I: DNA replication is continuous on leading strand while on the lagging strand it is discontinuous.
Statement II: DNA polymerase cannot initialize polymerization without a primer.
Which one of the following can form a nucleotide of DNA?
______ carbon atoms of successive nucleotides of nucleic acid are linked by Phospho-diester bond.
In a segment of DNA with 10 base pairs, the numbers of sugar molecules are _________.
"DNA is considered as genetic material" - Why?
Extension of the plasma membrane in a prokaryotic cell is ______.
Which of the following statement is incorrect?
During replication of DNA Okazaki fragments are formed in the direction:
Identify the biomolecule that is capable of self-replication.
Okazaki segments are formed during ______.
In viral DNA, how many origins of replication is/are present?
