29 (G(AC)) This region clearly shows the semiconservative nature of DNA replication.
30. . (H (AD)) This end of the DNA strand would have to be a 5' end
31. (F(AB)) This is the discontinuous or lagging strand of DNA replication, composed of Okazaki fragments.
32. (E) This represents an enzyme that has the capacity to carry out proofreading, checking DNA copying.
29. This region depicts the newly synthesized DNA strands (blue and green) attached to the parental DNA strand (yellow) at the replication fork. This pattern of "half-old, half-new" strands is a hallmark of semiconservative replication, where each daughter molecule inherits one parental strand and one newly synthesized strand.
30. Looking at the direction of the arrows, the end labeled H points towards the replication fork. In DNA replication, new nucleotides are always added to the 3' end of a growing strand. Therefore, the strand at H must already have a 5' end to accommodate further 3' additions.
31.
This region shows multiple short segments (Okazaki fragments) joined together by enzyme action. This is a characteristic feature of the lagging strand, where DNA synthesis happens in short bursts due to the limitations of DNA polymerase.
32.
The enzyme labeled E is likely DNA polymerase, which not only adds nucleotides during replication but also possesses proofreading activity which ensures accurate copying of the genetic information.