What are the differences between In vitro and In vivo DNA replication?  Please answer at your own words.

What is an example of a disease or a disorder that results from an error in DNA replication? What kind of DNA replication error is involved?

Does DNA replication follow the conservative,semiconservative, or dispersive model?

Why do we find multiple, short RNA pieces inserted into the lagging DNA strand during DNA replication?   Question 43 options:   the DNA polymerase is replaced by the RNA polymerase in these regions for unknown reasons   the DNA polymerase doesn't copy flawless and adds sometime uracil instead of thymine to the growing daughter nucleotide strand   multiple RNA primers have been added with the help of the primase enzyme to create multiple start sites for  the DNA polymerase   Retroviruses sometimes like to insert their RNA into the replication fork and favor the lagging strand   multiple RNA pieces are most likely found in the leading not the lagging strand during DNA replication