a d 5. (four marks) In eukaryotes, replication starts more or less simultaneously at multiple points of origin along a chromosome. What pattern of radioactivity would be found after briefly exposing to radioactive adenine a cell that is just beginning to replicate, and then quickly replacing the radioactive with nonradioactive adenine? a. many short sections of radioactive DNA b. one radioactive section of DNA starting at one particular end of the chromosomes c. many short radioactive strands of DNA in the leading strands only d. many short radioactive sections of DNA in the lagging strands only e. no radioactive sections in the DNA 6 (two marks) Cytokinesis is

DNA that has been  labeled with 15N is used as the template for replication. Replication is carried using 14N labeled dNTP's. After 3  rounds of replication, what percent of DNA molecules have one strand containing 15N and one strand containing 14N?   A. 50%   B. 75%   C. 25%   D. 100%

1. DNA replication is A. Conservative B. Semiconservative C. Dispersive D. A combination of the above 2. The Meselson-Stahl experiment was conducted to understand: A. The cell cycle phases B. mRNA translation C. DNA structure D. DNA replication 3. Which statement is true about DNA helicase? A. It hydrolyzes ATP B. It breaks the covalent bonds in the DNA C. It can move on the DNA in any direction (5'-to-3' or 3'-to-5') D. It is needed on both DNA strands

In the following image, A and B are and chromosomes E F A B Replication Centromere O Unreplicated, homologous O Replicated, homologous O Unreplicated, different O Replicated, different