Question

17. During the replication of a DNA molecule (Hint: More than one correct answer) A.) replication...

17. During the replication of a DNA molecule (Hint: More than one correct answer)

A.) replication fork is formed

B.) A pairs with T and G pairs with C

C.) the two new products of replication will have different genetic information when compared with the parent strands.

D.) new base pairs must be formed according to ratio mentioned by Chargaff's rule.
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Homework Answers

Answer #1

The replication of DNA molecule involves the unwinding of the DNA molecule by a Helicase enzyme.

The unwound DNA molecule is then bound by the DNA Polymerase. This enzyme reads the sequence on the template strand and synthesize a new strand in 5' to 3' direction. While synthesizing, A is paired with T, C with G, T with A and G with C. This results, in the ratio of Purines to Pyrimidines in the daughter strand to be equal to 1, i.e. Chargaff's rue holds true.

The enzyme has a very low error rate. Hence the daugher DNA stranda have the exact same information as in the parent strands.

Thus, the incorrect statement is C.

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