It is currently unknown how DNA originated. It came from RNA but how RNA formed is also unknown.
The study which involves the origin of DNA and RNA through purely naturalistic means is abiogenesis. There are basic ideas about organic molecules formed, but the origin of self-replicating molecules is merely speculation at this point. The question has beguiled scientists for a very long time especially because the odds of a molecule, as complex as a DNA molecule, spontaneously forming on its own is 1 chance in 1040,000
DNA replication is a process to create 2 new DNA molecules by splitting 1 DNA molecule. This occurs when a cell is about to divide and needs its own copy of DNA. The process consists of many different proteins and enzymes. This includes Gyrase, Helicase, Polymerase III, Primase (or RNA Polymerase), SSB's (or Single Stranded Binding Proteins), Ligase and Polymerase I. Each part has its own role for DNA replication to be successful.
DNA does not really 'come' from any cell. Your DNA is the product of the fusion of 50% of your father's DNA and 50% of your mother's DNA (note that due to dominance and recessiveness of alleles, not necessarily 50% of changes will come from each parent). DNA is found in all (with a few exceptions) cells, in the nucleus.
DNA polymerases comes from the grouping of enzymes. It creates DNA molecules from nucleotides and helps in the process of replicating DNA strands.
From the chromosomes which consist of genes and genes consist of alleles which determine the trait.
The discovery of restriction enzymes lead to the possibility of producing recombinant DNA
Replication.
DNA replication begins in areas of DNA molecules are called origins of replication.
Inhibitors of DNA replication are bacteria or toxins that inhibit the replication of DNA. E-Coli is an example of an inhibitor of DNA replication.
They are completely different processes in the central dogma. DNA replication is the replication of DNA into DNA by DNA polymerases. Trancription is the transcription of DNA into RNA by RNA polymerase.
Prokaryotic DNA is reproduced with DNA Polymerases replication forks.
Replication.
DNA replication begins in areas of DNA molecules are called origins of replication.
replication
Inhibitors of DNA replication are bacteria or toxins that inhibit the replication of DNA. E-Coli is an example of an inhibitor of DNA replication.
DNA replication produces two copies of the DNA.
DNA replication
DNA replication produces a copy of the DNA. At the same time the cell in which the DNA is to be found splits into two with a copy of the DNA in each. DNA replication is caused by cell replication during the process of mitosis.
DNA replication occurs in living cells. The name of the sites where DNA replication occurs is called the origins of replication.
Transcription.
They are completely different processes in the central dogma. DNA replication is the replication of DNA into DNA by DNA polymerases. Trancription is the transcription of DNA into RNA by RNA polymerase.
DNA replication
Prokaryotic DNA is reproduced with DNA Polymerases replication forks.