DNA replication is achieved by a process called replication, meaning that each new double helix includes an old strand from the parent DNA and a new strand.

Semi- Conservative

Explanation: semi conservative model was proposed by Watson and Crick's.

Semi-conservative replication takes place before mitosis during replication.

The two original DNA strands split into two each forming a template for the new copies. The new copies have it codons pair u with the old template this implies that the new synthesis DNA strand consists of both the old DNA and the new strand with there base pairs pairing up.

semi conservative replication has two stages

Stage 1- This when the old DNA strand split and each strand serving as a template for the new strand. and the New strand forms a doubles helix DNA strand containing both old and new DNA strands

Stage2- This occur when the new DNA strand(called hybrid) splits from the old strand and the join with another newly synthesis DNA strand.

We also have the conservative DNA replication this doesn't allow for splitting of Old DNA strand,the entire DNA strand is used as a template for the new ones. The new strand produce during cell division also consists of a complete double helix strand.

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