What is semi-conservative DNA replication and how does it differ from conservative replication? Which type of DNA replication is found in living organisms?

Semi-conservative DNA replication:

The semi-conservative model of DNA replication explains that the newly synthesized daughter DNA molecule contains one newly synthesized strand and one parental strand. This model of replication is important and explains the biological significance of replication. The DNA unwinds in this mode of replication.

Conservative model of DNA replication:

The conservative model of DNA replication explains that the newly synthesized daughter DNA molecules has the one DNA helix of parent and the other DNA helix are entirely new. This model does not has a biological significance. The DNA is not unwinds in this mode of replication.

The semi-conservative mode of DNA replication is found in the living organism.