cell bio quiz 3

cell bio quiz 3 - 1. Explain the...

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1. Explain the “semi-conservative” aspect of DNA replication: Semi-conservative replication produces molecules with both old and new DNA, but each molecule is composed of one old strand and one new strand. Each strand acts as a template for the synthesis of a new DNA molecule by the addition of complementary base pairs, thus making a new DNA strand that is the complementary sequence to the parental DNA. Each daughter DNA molecule ends up with one of the original strands and one newly synthesized strand. The two separate DNA strands can act as templates to produce a complementary new strand. 2. Relate the timing of replication within the cell cycle. Draw a diagram or write it out. DNA replication occurs before a cell actually divides, during interphase. Interphase is the time the cell spends when it is not going through mitosis. It consists of three stages called G1 stage, S stage and G2 stage. Replication/synthesis occurs within the S stage of interphase. 3.
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cell bio quiz 3 - 1. Explain the...

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