Question

What are the three types of DNA Replication?

Answer 1

Hint: Replication is the process of making two identical DNA molecules from a double-stranded DNA molecule. One of the most fundamental processes in a cell is DNA replication. When a cell divides, the two daughter cells must share the exact same genetic information, or DNA, like the parent cell. Each strand of existing DNA serves as a replication template in this process.

Complete answer:
There are three types of DNA replication: conservative, semiconservative, and dispersive. All of these types allow for the creation of daughter DNA that contains the same amount of mother DNA as the mother DNA and is newly formed. Only the mother DNA distribution in the molecules differs. Half of the daughter DNA molecules are made from new material after conservative replication, while the other half is made from old material. Each daughter DNA molecule has half made from new material and a half made from old material after semiconservative and dispersive replication.

After daughter molecules replication, however, semiconservative and dispersive replication can be distinguished. If the replication is semiconservative, half of the new material and half of the old material will be used to make the second generation's daughter molecules. The remaining 50% will be made entirely of new materials. If dispersive replication is used, all molecules in the second generation will be made up of 25% old material and 75% new material.

Note: Replication can happen at 1,000 nucleotides per second in the prokaryotic bacterium E. coli. Human DNA replicates at a rate of 50 nucleotides per second in eukaryotes. Multiple polymerases can synthesize two new strands at the same time using each unwound strand from the original DNA double helix as a template in both cases, allowing replication to happen so quickly.