Explain in your own words why DNA replication is said to be semiconservative?

1.5 Protocol Layers and Their Service Models  Application Layer o This is where network applications and their application-layer protocols reside. This layer contains HTTP, SMTP, and FTP protocols.  Transport Layer o This is the layer that actually transports messages from the application layer between application endpoints. There are two main protocols in this layer; TCP and UDP.  Network Layer o This layer is responsible for moving network-layer packets from one host to another. These packets are known as datagrams. The network layer contains the IP protocol.  Link Layer o The network layer relies on the link layer to move datagrams from one node to the next. So the link layer takes the datagram from the network layer, passes it to the next node, and then gives it back to the network layer.  Physical Layer o The physical layer’s job is to move the individual bits within the frame (link-layer packet) from one node to the next.