So, baby and placenta are both inside the uterus, with the placenta off to the the side inside and the baby or fetus or embryo also inside the uterus but at the center and up against the other side of the womb. The fertilized egg is the zygote.
Like many living things, viruses live to reproduce. They find a host cell, replicate themselves, and leave the host cell with all of their new copies. One method of reproducing and fleeing a cell is the lytic cycle. In a lytic cycle, the virus reproduces thousands to millions of times in just a few hours, then weakens the cell wall enough that the cell will lyse, or burst open, setting the army of new viruses free.
The location of viral DNA in the lysogenic phage cycle is within the host DNA, therefore in both cases the virus/phage replicates using the host DNA machinery, but in the lytic phage cycle, the phage is a free floating separate molecule to the host DNA.here are three classes of genes in the phage genome that regulate whether the lytic or lysogenic cycles will emerge. The first are the immediate early genes, the second is the delayed early genes and the third is the late genes. 1  Immediate early genes: These genes code for two transcription factors: N and cro.