57. You learn that a Mars lander has retrieved a bacterial sample from the polar ice caps You obtain a sample the Mars bacteria replicate their DNA. Based on the following equilibrium density gradient centrifugation of these bacteria and perform the same kind of experiment that Meselson and Stahl did to determine how results, what type of replication would you propose for these new bacteria? band position A) 28060 D) 8 88 before after 1st after 2nd after 3rd replication replication replication N₁ conservative semiconservative dispersive semiconservative or dispersive consery

A friend asks for help understanding replication for the next biology test. (S)he draws a replication bubble for a DNA molecule being replicated. The origin of replication is shown (0) and newly replicated DNA is shown as gray.  Small gray arrows represent okazaki fragments. Solid gray lines represent leading strand. Draw a corrected version of a replication bubble below.

The leading and lagging strands of replicating DNA are growing in opposite directions; however, the extension of any DNA strand is always   Question 10 options:   a)  5' to 3'.   b)  3' to 5'.   c)  either 5' to 3' or 3' to 5' depending on the direction of the replication fork.   d)  alternating between 5' to 3' and 3' to 5'.   e)  none of the above.

Human cells have approximatelly 6,000,000,000 base pairs. How many errors per replication occur?