Cellular and molecular biology Question 1 (2 pts): Explain why origins of replic

Question

Cellular and molecular biology Question 1 (2 pts): Explain why origins of replication along a chromosome tend to start at sites with stretches of A and T nucleotides. Question 2 (2 pts): If nucleotides in a strand of DNA have single phosphate groups linking them, why does DNA Polymerase III use deoxynucleoside triphosphate molecules as the precursor molecules? Question 3 (2 pts): Explain the problem posed by the moving replication forks of a replicon in terms of how DNA Pol III functions. Question 4 (10 pts): Draw in the newly synthesized DNA within the replicon below. Draw arrows at ends of strands to indicate the direction of their synthesis Label: Leading strand, Lagging strand, Okazaki fragments, RNA primers . 3' 5'

Explanation / Answer

Origin of replication occurs in particular sequence in chromosome of prokaryot and eukaryotes.That is bidirectional or unidirectional...origin of replication start at stretched site of A and T nucleotides because adenine and thymine are easier to separate because their base stacking interaction are not as strong those of guanine and cytosine...(A=T G=_C)

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